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论文正文-浅谈函数的零点问题

学士学位论文题目浅谈函数的零点问题浅谈函数的零点问题摘要：浅谈函数零点问题实质上就是说，函数零点的存在性，零点唯一性，零点的个数问题及其应用的问题。

本文运用零点定理、罗尔定理及其推广和微分中值定理、介值定理等多个重要定理对函数零点存在性、唯一性、个数问题进行多方面的解答，结合典型例题分析、讨论并证明相关问题，得出解决此类问题的解决方法，使得今后在学习函数零点的过程中得到了简便、全面的答题策略。

关键词：函数零点定理罗尔定理唯一性存在性零点个数一、预备知识1. 概念及定理函数零点定义：对于函数()y f x =，我们把使()0f x =的实数x 叫做函数()y f x =的零点。

二、零点的存在性问题2.1 在数学学习中，函数零点的存在性问题始终都是人们研究的热点可课题。

可以用零点定理解决，也能用罗尔定理、函数最值、函数的幂级数展开式及微分中值定理解决此问题。

（1）零点定理：若函数在区间[,]a b 上的图像时连续不断的一条曲线，且满足()()0f a f b <，那么，函数()y f x =在区间(,)a b 内有零点，即存在(,)c a b ∈，使得()0f c =。

这个c 也就是方程()0f x =的实根。

零点定理的证明：不妨设()0,()0.f a f b <> 令{|()0,[,]}.E x f x x a b =<∈由()0f a <知,E ≠∅ 且b 为E 的一个上界，于是根据确界存在原理，存在sup [,]E a b ξ=∈ ，下证()0f ξ=（注意到()0,()0,f a f b ≠≠ 故此时必有(),a b ξ∈）事实上，()1若()0,f ξ<则[,)a b ξ∈。

由函数连续的局部保号性知存在0,σ>对()1,,()0x f x ξξσ∈+<存在11,sup x E x E ∈>,这与sup E 为E 的上界矛盾;()2若()0,f ξ>则(,].a b ξ∈仍由函数连续的局部保号性知存在0,σ>对()1,,()0x f x ξσξ∈->存在1x 为E 的一个上界，且1,x ξ< 这又与sup E 为E 的最小上界矛盾。

二月桂酸二丁基锡MSDS

二月桂酸二丁基锡CAS：77-58-7化学品安全技术说明书版本号5.0修订日期05.12.2012打印日期13.04.2014 1.化学品及企业标识1.1 产品标识符产品名称: 二月桂酸二丁基锡产品编号: NT1129品牌: NEWTOP1.2 鉴别的其他方法无数据资料1.3 有关的确定了的物质或混合物的用途和建议不适合的用途仅用于研发。

不作为药品、家庭或其它用途。

1.4 安全技术说明书提供者的详情制造商或供应商名称: Newtop Chemical Materials (shanghai) Co.,LtdUnit A4,BuildingNo.A,No.780,Song Pu Road,BaoShan District200940 ShanghaiCHINA电话号码传真电子邮件地址：+86021-66208786 ：+86021-51961833：183********@1.5 应急电话紧急联系电话: +86 183******** 2.危险性概述2.1 GHS-分类急性毒性, 经口 (类别 3)急性毒性, 吸入 (类别 1)急性毒性, 经皮 (类别 5)皮肤刺激 (类别 2)眼睛刺激 (类别 2A)皮肤过敏 (类别 1)急性水生毒性 (类别 1)2.2 GHS 标记要素，包括预防性的陈述象形图警示词危险危险申明H301吞咽会中毒H313接触皮肤可能有害。

H315造成皮肤刺激。

H317可能导致皮肤过敏反应。

H319造成严重眼刺激。

H330吸入致命。

H400对水生生物毒性极大。

警告申明预防P260不要吸入粉尘/ 烟/ 气体/ 烟雾/ 蒸汽/ 喷雾。

P264操作后彻底清洁皮肤。

P270使用本产品时不要进食、饮水或吸烟。

P271只能在室外或通风良好之处使用。

P272污染的工作服不得带出工作场所。

P273避免释放到环境中。

P280穿戴防护手套/ 眼保护罩/ 面部保护罩。

P284戴呼吸防护装置。

响应P301 + P310如果吞下去了: 立即呼救解毒中心或医生。

OSHA现场作业手册说明书

DIRECTIVE NUMBER: CPL 02-00-150 EFFECTIVE DATE: April 22, 2011 SUBJECT: Field Operations Manual (FOM)ABSTRACTPurpose: This instruction cancels and replaces OSHA Instruction CPL 02-00-148,Field Operations Manual (FOM), issued November 9, 2009, whichreplaced the September 26, 1994 Instruction that implemented the FieldInspection Reference Manual (FIRM). The FOM is a revision of OSHA’senforcement policies and procedures manual that provides the field officesa reference document for identifying the responsibilities associated withthe majority of their inspection duties. This Instruction also cancels OSHAInstruction FAP 01-00-003 Federal Agency Safety and Health Programs,May 17, 1996 and Chapter 13 of OSHA Instruction CPL 02-00-045,Revised Field Operations Manual, June 15, 1989.Scope: OSHA-wide.References: Title 29 Code of Federal Regulations §1903.6, Advance Notice ofInspections; 29 Code of Federal Regulations §1903.14, Policy RegardingEmployee Rescue Activities; 29 Code of Federal Regulations §1903.19,Abatement Verification; 29 Code of Federal Regulations §1904.39,Reporting Fatalities and Multiple Hospitalizations to OSHA; and Housingfor Agricultural Workers: Final Rule, Federal Register, March 4, 1980 (45FR 14180).Cancellations: OSHA Instruction CPL 02-00-148, Field Operations Manual, November9, 2009.OSHA Instruction FAP 01-00-003, Federal Agency Safety and HealthPrograms, May 17, 1996.Chapter 13 of OSHA Instruction CPL 02-00-045, Revised FieldOperations Manual, June 15, 1989.State Impact: Notice of Intent and Adoption required. See paragraph VI.Action Offices: National, Regional, and Area OfficesOriginating Office: Directorate of Enforcement Programs Contact: Directorate of Enforcement ProgramsOffice of General Industry Enforcement200 Constitution Avenue, NW, N3 119Washington, DC 20210202-693-1850By and Under the Authority ofDavid Michaels, PhD, MPHAssistant SecretaryExecutive SummaryThis instruction cancels and replaces OSHA Instruction CPL 02-00-148, Field Operations Manual (FOM), issued November 9, 2009. The one remaining part of the prior Field Operations Manual, the chapter on Disclosure, will be added at a later date. This Instruction also cancels OSHA Instruction FAP 01-00-003 Federal Agency Safety and Health Programs, May 17, 1996 and Chapter 13 of OSHA Instruction CPL 02-00-045, Revised Field Operations Manual, June 15, 1989. This Instruction constitutes OSHA’s general enforcement policies and procedures manual for use by the field offices in conducting inspections, issuing citations and proposing penalties.Significant Changes∙A new Table of Contents for the entire FOM is added.∙ A new References section for the entire FOM is added∙ A new Cancellations section for the entire FOM is added.∙Adds a Maritime Industry Sector to Section III of Chapter 10, Industry Sectors.∙Revises sections referring to the Enhanced Enforcement Program (EEP) replacing the information with the Severe Violator Enforcement Program (SVEP).∙Adds Chapter 13, Federal Agency Field Activities.∙Cancels OSHA Instruction FAP 01-00-003, Federal Agency Safety and Health Programs, May 17, 1996.DisclaimerThis manual is intended to provide instruction regarding some of the internal operations of the Occupational Safety and Health Administration (OSHA), and is solely for the benefit of the Government. No duties, rights, or benefits, substantive or procedural, are created or implied by this manual. The contents of this manual are not enforceable by any person or entity against the Department of Labor or the United States. Statements which reflect current Occupational Safety and Health Review Commission or court precedents do not necessarily indicate acquiescence with those precedents.Table of ContentsCHAPTER 1INTRODUCTIONI.PURPOSE. ........................................................................................................... 1-1 II.SCOPE. ................................................................................................................ 1-1 III.REFERENCES .................................................................................................... 1-1 IV.CANCELLATIONS............................................................................................. 1-8 V. ACTION INFORMATION ................................................................................. 1-8A.R ESPONSIBLE O FFICE.......................................................................................................................................... 1-8B.A CTION O FFICES. .................................................................................................................... 1-8C. I NFORMATION O FFICES............................................................................................................ 1-8 VI. STATE IMPACT. ................................................................................................ 1-8 VII.SIGNIFICANT CHANGES. ............................................................................... 1-9 VIII.BACKGROUND. ................................................................................................. 1-9 IX. DEFINITIONS AND TERMINOLOGY. ........................................................ 1-10A.T HE A CT................................................................................................................................................................. 1-10B. C OMPLIANCE S AFETY AND H EALTH O FFICER (CSHO). ...........................................................1-10B.H E/S HE AND H IS/H ERS ..................................................................................................................................... 1-10C.P ROFESSIONAL J UDGMENT............................................................................................................................... 1-10E. W ORKPLACE AND W ORKSITE ......................................................................................................................... 1-10CHAPTER 2PROGRAM PLANNINGI.INTRODUCTION ............................................................................................... 2-1 II.AREA OFFICE RESPONSIBILITIES. .............................................................. 2-1A.P ROVIDING A SSISTANCE TO S MALL E MPLOYERS. ...................................................................................... 2-1B.A REA O FFICE O UTREACH P ROGRAM. ............................................................................................................. 2-1C. R ESPONDING TO R EQUESTS FOR A SSISTANCE. ............................................................................................ 2-2 III. OSHA COOPERATIVE PROGRAMS OVERVIEW. ...................................... 2-2A.V OLUNTARY P ROTECTION P ROGRAM (VPP). ........................................................................... 2-2B.O NSITE C ONSULTATION P ROGRAM. ................................................................................................................ 2-2C.S TRATEGIC P ARTNERSHIPS................................................................................................................................. 2-3D.A LLIANCE P ROGRAM ........................................................................................................................................... 2-3 IV. ENFORCEMENT PROGRAM SCHEDULING. ................................................ 2-4A.G ENERAL ................................................................................................................................................................. 2-4B.I NSPECTION P RIORITY C RITERIA. ..................................................................................................................... 2-4C.E FFECT OF C ONTEST ............................................................................................................................................ 2-5D.E NFORCEMENT E XEMPTIONS AND L IMITATIONS. ....................................................................................... 2-6E.P REEMPTION BY A NOTHER F EDERAL A GENCY ........................................................................................... 2-6F.U NITED S TATES P OSTAL S ERVICE. .................................................................................................................. 2-7G.H OME-B ASED W ORKSITES. ................................................................................................................................ 2-8H.I NSPECTION/I NVESTIGATION T YPES. ............................................................................................................... 2-8 V.UNPROGRAMMED ACTIVITY – HAZARD EVALUATION AND INSPECTION SCHEDULING ............................................................................ 2-9 VI.PROGRAMMED INSPECTIONS. ................................................................... 2-10A.S ITE-S PECIFIC T ARGETING (SST) P ROGRAM. ............................................................................................. 2-10B.S CHEDULING FOR C ONSTRUCTION I NSPECTIONS. ..................................................................................... 2-10C.S CHEDULING FOR M ARITIME I NSPECTIONS. ............................................................................. 2-11D.S PECIAL E MPHASIS P ROGRAMS (SEP S). ................................................................................... 2-12E.N ATIONAL E MPHASIS P ROGRAMS (NEP S) ............................................................................... 2-13F.L OCAL E MPHASIS P ROGRAMS (LEP S) AND R EGIONAL E MPHASIS P ROGRAMS (REP S) ............ 2-13G.O THER S PECIAL P ROGRAMS. ............................................................................................................................ 2-13H.I NSPECTION S CHEDULING AND I NTERFACE WITH C OOPERATIVE P ROGRAM P ARTICIPANTS ....... 2-13CHAPTER 3INSPECTION PROCEDURESI.INSPECTION PREPARATION. .......................................................................... 3-1 II.INSPECTION PLANNING. .................................................................................. 3-1A.R EVIEW OF I NSPECTION H ISTORY .................................................................................................................... 3-1B.R EVIEW OF C OOPERATIVE P ROGRAM P ARTICIPATION .............................................................................. 3-1C.OSHA D ATA I NITIATIVE (ODI) D ATA R EVIEW .......................................................................................... 3-2D.S AFETY AND H EALTH I SSUES R ELATING TO CSHO S.................................................................. 3-2E.A DVANCE N OTICE. ................................................................................................................................................ 3-3F.P RE-I NSPECTION C OMPULSORY P ROCESS ...................................................................................................... 3-5G.P ERSONAL S ECURITY C LEARANCE. ................................................................................................................. 3-5H.E XPERT A SSISTANCE. ........................................................................................................................................... 3-5 III. INSPECTION SCOPE. ......................................................................................... 3-6A.C OMPREHENSIVE ................................................................................................................................................... 3-6B.P ARTIAL. ................................................................................................................................................................... 3-6 IV. CONDUCT OF INSPECTION .............................................................................. 3-6A.T IME OF I NSPECTION............................................................................................................................................. 3-6B.P RESENTING C REDENTIALS. ............................................................................................................................... 3-6C.R EFUSAL TO P ERMIT I NSPECTION AND I NTERFERENCE ............................................................................. 3-7D.E MPLOYEE P ARTICIPATION. ............................................................................................................................... 3-9E.R ELEASE FOR E NTRY ............................................................................................................................................ 3-9F.B ANKRUPT OR O UT OF B USINESS. .................................................................................................................... 3-9G.E MPLOYEE R ESPONSIBILITIES. ................................................................................................. 3-10H.S TRIKE OR L ABOR D ISPUTE ............................................................................................................................. 3-10I. V ARIANCES. .......................................................................................................................................................... 3-11 V. OPENING CONFERENCE. ................................................................................ 3-11A.G ENERAL ................................................................................................................................................................ 3-11B.R EVIEW OF A PPROPRIATION A CT E XEMPTIONS AND L IMITATION. ..................................................... 3-13C.R EVIEW S CREENING FOR P ROCESS S AFETY M ANAGEMENT (PSM) C OVERAGE............................. 3-13D.R EVIEW OF V OLUNTARY C OMPLIANCE P ROGRAMS. ................................................................................ 3-14E.D ISRUPTIVE C ONDUCT. ...................................................................................................................................... 3-15F.C LASSIFIED A REAS ............................................................................................................................................. 3-16VI. REVIEW OF RECORDS. ................................................................................... 3-16A.I NJURY AND I LLNESS R ECORDS...................................................................................................................... 3-16B.R ECORDING C RITERIA. ...................................................................................................................................... 3-18C. R ECORDKEEPING D EFICIENCIES. .................................................................................................................. 3-18 VII. WALKAROUND INSPECTION. ....................................................................... 3-19A.W ALKAROUND R EPRESENTATIVES ............................................................................................................... 3-19B.E VALUATION OF S AFETY AND H EALTH M ANAGEMENT S YSTEM. ....................................................... 3-20C.R ECORD A LL F ACTS P ERTINENT TO A V IOLATION. ................................................................................. 3-20D.T ESTIFYING IN H EARINGS ................................................................................................................................ 3-21E.T RADE S ECRETS. ................................................................................................................................................. 3-21F.C OLLECTING S AMPLES. ..................................................................................................................................... 3-22G.P HOTOGRAPHS AND V IDEOTAPES.................................................................................................................. 3-22H.V IOLATIONS OF O THER L AWS. ....................................................................................................................... 3-23I.I NTERVIEWS OF N ON-M ANAGERIAL E MPLOYEES .................................................................................... 3-23J.M ULTI-E MPLOYER W ORKSITES ..................................................................................................................... 3-27 K.A DMINISTRATIVE S UBPOENA.......................................................................................................................... 3-27 L.E MPLOYER A BATEMENT A SSISTANCE. ........................................................................................................ 3-27 VIII. CLOSING CONFERENCE. .............................................................................. 3-28A.P ARTICIPANTS. ..................................................................................................................................................... 3-28B.D ISCUSSION I TEMS. ............................................................................................................................................ 3-28C.A DVICE TO A TTENDEES .................................................................................................................................... 3-29D.P ENALTIES............................................................................................................................................................. 3-30E.F EASIBLE A DMINISTRATIVE, W ORK P RACTICE AND E NGINEERING C ONTROLS. ............................ 3-30F.R EDUCING E MPLOYEE E XPOSURE. ................................................................................................................ 3-32G.A BATEMENT V ERIFICATION. ........................................................................................................................... 3-32H.E MPLOYEE D ISCRIMINATION .......................................................................................................................... 3-33 IX. SPECIAL INSPECTION PROCEDURES. ...................................................... 3-33A.F OLLOW-UP AND M ONITORING I NSPECTIONS............................................................................................ 3-33B.C ONSTRUCTION I NSPECTIONS ......................................................................................................................... 3-34C. F EDERAL A GENCY I NSPECTIONS. ................................................................................................................. 3-35CHAPTER 4VIOLATIONSI. BASIS OF VIOLATIONS ..................................................................................... 4-1A.S TANDARDS AND R EGULATIONS. .................................................................................................................... 4-1B.E MPLOYEE E XPOSURE. ........................................................................................................................................ 4-3C.R EGULATORY R EQUIREMENTS. ........................................................................................................................ 4-6D.H AZARD C OMMUNICATION. .............................................................................................................................. 4-6E. E MPLOYER/E MPLOYEE R ESPONSIBILITIES ................................................................................................... 4-6 II. SERIOUS VIOLATIONS. .................................................................................... 4-8A.S ECTION 17(K). ......................................................................................................................... 4-8B.E STABLISHING S ERIOUS V IOLATIONS ............................................................................................................ 4-8C. F OUR S TEPS TO BE D OCUMENTED. ................................................................................................................... 4-8 III. GENERAL DUTY REQUIREMENTS ............................................................. 4-14A.E VALUATION OF G ENERAL D UTY R EQUIREMENTS ................................................................................. 4-14B.E LEMENTS OF A G ENERAL D UTY R EQUIREMENT V IOLATION.............................................................. 4-14C. U SE OF THE G ENERAL D UTY C LAUSE ........................................................................................................ 4-23D.L IMITATIONS OF U SE OF THE G ENERAL D UTY C LAUSE. ..............................................................E.C LASSIFICATION OF V IOLATIONS C ITED U NDER THE G ENERAL D UTY C LAUSE. ..................F. P ROCEDURES FOR I MPLEMENTATION OF S ECTION 5(A)(1) E NFORCEMENT ............................ 4-25 4-27 4-27IV.OTHER-THAN-SERIOUS VIOLATIONS ............................................... 4-28 V.WILLFUL VIOLATIONS. ......................................................................... 4-28A.I NTENTIONAL D ISREGARD V IOLATIONS. ..........................................................................................4-28B.P LAIN I NDIFFERENCE V IOLATIONS. ...................................................................................................4-29 VI. CRIMINAL/WILLFUL VIOLATIONS. ................................................... 4-30A.A REA D IRECTOR C OORDINATION ....................................................................................................... 4-31B.C RITERIA FOR I NVESTIGATING P OSSIBLE C RIMINAL/W ILLFUL V IOLATIONS ........................ 4-31C. W ILLFUL V IOLATIONS R ELATED TO A F ATALITY .......................................................................... 4-32 VII. REPEATED VIOLATIONS. ...................................................................... 4-32A.F EDERAL AND S TATE P LAN V IOLATIONS. ........................................................................................4-32B.I DENTICAL S TANDARDS. .......................................................................................................................4-32C.D IFFERENT S TANDARDS. .......................................................................................................................4-33D.O BTAINING I NSPECTION H ISTORY. .....................................................................................................4-33E.T IME L IMITATIONS..................................................................................................................................4-34F.R EPEATED V. F AILURE TO A BATE....................................................................................................... 4-34G. A REA D IRECTOR R ESPONSIBILITIES. .............................................................................. 4-35 VIII. DE MINIMIS CONDITIONS. ................................................................... 4-36A.C RITERIA ................................................................................................................................................... 4-36B.P ROFESSIONAL J UDGMENT. ..................................................................................................................4-37C. A REA D IRECTOR R ESPONSIBILITIES. .............................................................................. 4-37 IX. CITING IN THE ALTERNATIVE ............................................................ 4-37 X. COMBINING AND GROUPING VIOLATIONS. ................................... 4-37A.C OMBINING. ..............................................................................................................................................4-37B.G ROUPING. ................................................................................................................................................4-38C. W HEN N OT TO G ROUP OR C OMBINE. ................................................................................................4-38 XI. HEALTH STANDARD VIOLATIONS ....................................................... 4-39A.C ITATION OF V ENTILATION S TANDARDS ......................................................................................... 4-39B.V IOLATIONS OF THE N OISE S TANDARD. ...........................................................................................4-40 XII. VIOLATIONS OF THE RESPIRATORY PROTECTION STANDARD(§1910.134). ....................................................................................................... XIII. VIOLATIONS OF AIR CONTAMINANT STANDARDS (§1910.1000) ... 4-43 4-43A.R EQUIREMENTS UNDER THE STANDARD: .................................................................................................. 4-43B.C LASSIFICATION OF V IOLATIONS OF A IR C ONTAMINANT S TANDARDS. ......................................... 4-43 XIV. CITING IMPROPER PERSONAL HYGIENE PRACTICES. ................... 4-45A.I NGESTION H AZARDS. .................................................................................................................................... 4-45B.A BSORPTION H AZARDS. ................................................................................................................................ 4-46C.W IPE S AMPLING. ............................................................................................................................................. 4-46D.C ITATION P OLICY ............................................................................................................................................ 4-46 XV. BIOLOGICAL MONITORING. ...................................................................... 4-47CHAPTER 5CASE FILE PREPARATION AND DOCUMENTATIONI.INTRODUCTION ............................................................................................... 5-1 II.INSPECTION CONDUCTED, CITATIONS BEING ISSUED. .................... 5-1A.OSHA-1 ................................................................................................................................... 5-1B.OSHA-1A. ............................................................................................................................... 5-1C. OSHA-1B. ................................................................................................................................ 5-2 III.INSPECTION CONDUCTED BUT NO CITATIONS ISSUED .................... 5-5 IV.NO INSPECTION ............................................................................................... 5-5 V. HEALTH INSPECTIONS. ................................................................................. 5-6A.D OCUMENT P OTENTIAL E XPOSURE. ............................................................................................................... 5-6B.E MPLOYER’S O CCUPATIONAL S AFETY AND H EALTH S YSTEM. ............................................................. 5-6 VI. AFFIRMATIVE DEFENSES............................................................................. 5-8A.B URDEN OF P ROOF. .............................................................................................................................................. 5-8B.E XPLANATIONS. ..................................................................................................................................................... 5-8 VII. INTERVIEW STATEMENTS. ........................................................................ 5-10A.G ENERALLY. ......................................................................................................................................................... 5-10B.CSHO S SHALL OBTAIN WRITTEN STATEMENTS WHEN: .......................................................................... 5-10C.L ANGUAGE AND W ORDING OF S TATEMENT. ............................................................................................. 5-11D.R EFUSAL TO S IGN S TATEMENT ...................................................................................................................... 5-11E.V IDEO AND A UDIOTAPED S TATEMENTS. ..................................................................................................... 5-11F.A DMINISTRATIVE D EPOSITIONS. .............................................................................................5-11 VIII. PAPERWORK AND WRITTEN PROGRAM REQUIREMENTS. .......... 5-12 IX.GUIDELINES FOR CASE FILE DOCUMENTATION FOR USE WITH VIDEOTAPES AND AUDIOTAPES .............................................................. 5-12 X.CASE FILE ACTIVITY DIARY SHEET. ..................................................... 5-12 XI. CITATIONS. ..................................................................................................... 5-12A.S TATUTE OF L IMITATIONS. .............................................................................................................................. 5-13B.I SSUING C ITATIONS. ........................................................................................................................................... 5-13C.A MENDING/W ITHDRAWING C ITATIONS AND N OTIFICATION OF P ENALTIES. .................................. 5-13D.P ROCEDURES FOR A MENDING OR W ITHDRAWING C ITATIONS ............................................................ 5-14 XII. INSPECTION RECORDS. ............................................................................... 5-15A.G ENERALLY. ......................................................................................................................................................... 5-15B.R ELEASE OF I NSPECTION I NFORMATION ..................................................................................................... 5-15C. C LASSIFIED AND T RADE S ECRET I NFORMATION ...................................................................................... 5-16。

二月桂酸二丁基锡MSDS

不作为药品、家庭或其它用途。

H315造成皮肤刺激。

H317可能导致皮肤过敏反应。

H319造成严重眼刺激。

H330吸入致命。

H400对水生生物毒性极大。

警告申明预防P260不要吸入粉尘/ 烟/ 气体/ 烟雾/ 蒸汽/ 喷雾。

P264操作后彻底清洁皮肤。

P270使用本产品时不要进食、饮水或吸烟。

P271只能在室外或通风良好之处使用。

P272污染的工作服不得带出工作场所。

P273避免释放到环境中。

P280穿戴防护手套/ 眼保护罩/ 面部保护罩。

P284戴呼吸防护装置。

响应P301 + P310如果吞下去了: 立即呼救解毒中心或医生。

二丁基二月桂酸锡

二丁基二月桂酸锡化学品安全技术说明书第一部分：化学品名称化学品中文名称：二丁基二月桂酸锡化学品英文名称：dibutyltin dilaurate 中文名称2：二丁基二(十二酸)锡英文名称2：dibutyltin didodecanoate 技术说明书编码：2208CAS No.：77-58-7 分子式：C 32H 64O 4Sn 分子量：631.65第二部分：成分/组成信息有害物成分含量CAS No.第三部分：危险性概述健康危害：急性中毒时主要表现为中枢神经系统症状,有头痛、头晕、乏力、精神萎靡、恶心等。

长期接触可引起神经衰弱综合征。

对皮肤可致接触性皮炎和过敏性皮炎环境危害：对环境有危害。

燃爆危险：本品可燃，有毒。

第四部分：急救措施皮肤接触：脱去污染的衣着，用大量流动清水冲洗眼睛接触：提起眼睑，用流动清水或生理盐水冲洗。

就医。

吸入：迅速脱离现场至空气新鲜处。

保持呼吸道通畅。

如呼吸困难，给输氧。

如呼吸停止，立即进行人工呼吸。

就医。

食入：饮足量温水，催吐。

就医。

第五部分：消防措施危险特性：遇明火、高热可燃。

与氧化剂可发生反应。

受高热分解放出有毒的气体。

其蒸气比空气重，能在较低处扩散到相当远的地方，遇火源会着火回燃。

若遇高热，容器内压增大，有开裂和爆炸的危有害燃烧产物：一氧化碳、二氧化碳、氧化锡。

灭火方法：消防人员须佩戴防毒面具、穿全身消防服，在上风向灭火。

尽可能将容器从火场移至空旷处。

喷水保持火场容器冷却，直至灭火结束。

处在火场中的容器若已变色或从安全泄压装置中产生声音，必须马上撤离。

灭火剂：雾状水、泡沫、干粉、二氧化碳、砂土。

第六部分：泄漏应急处理有害物成分含量 CAS No.:二丁基二月桂酸锡 ≥96.0% 77-58-7应急处理：迅速撤离泄漏污染区人员至安全区，并进行隔离，严格限制出入。

切断火源。

建议应急处理人员戴自给式呼吸器，穿防毒服。

不要直接接触泄漏物。

尽可能切断泄漏源。

若是液体，防止流入下水道、排洪沟等限制性空间。

高二英语区块链技术单选题50题

高二英语区块链技术单选题50题1. In the blockchain technology, the ______ of transactions is crucial for security.A. recordB. recordingC. recordsD. recorded答案：A。

本题考查名词的单复数形式。

“record”作名词时，意为“记录”，是可数名词，此处需要用单数形式，A 选项符合；B 选项“recording”是动名词形式；C 选项“records”是复数形式；D 选项“recorded”是过去分词形式，均不符合此处语境。

2. The blockchain ensures the ______ of data.A. accuracyB. accurateC. inaccuracyD. inaccurately答案：A。

本题考查名词和形容词的用法。

“accuracy”是名词，意为“准确性”；B 选项“accurate”是形容词，意为“准确的”；C 选项“inaccuracy”是名词，意为“不准确性”；D 选项“inaccurately”是副词，意为“不准确地”。

此处需要名词，且根据句意，应是确保数据的准确性，A 选项符合。

3. The blockchain technology is highly ______ in financialtransactions.A. usefulB. uselessC. useD. used答案：A。

本题考查形容词的词义。

“useful”意为“有用的”；B 选项“useless”意为“无用的”；C 选项“use”是动词或名词，意为“使用”；D 选项“used”是过去分词或形容词，意为“用过的”。

根据句意，区块链技术在金融交易中是非常有用的，A 选项符合。

4. The ______ of the blockchain makes it trustworthy.A. transparencyB. transparentlyC. transparentD. transparence答案：A。

c14-test 2-section 4单词整理

C14 Test 2 - Section 4 单词整理1. 介绍本文将针对C14 Test 2 - Section 4中出现的一些重要单词进行整理和解释，以便帮助大家更好地理解和掌握这些单词的用法和意义。

2. analyzeanalyze是一个动词，意思是“分析”，通常用于描述对某个问题或情况进行系统细致的研究和分析。

例如：We need to analyze the data before reaching any conclusions.（在得出任何结论之前，我们需要分析这些数据。

）3. crucialcrucial是一个形容词，意思是“至关重要的”，用于强调某个事情或因素的重要性。

例如：Effectivemunication is crucial in any relationship.4. depictdepict是一个动词，意思是“描述”或“描绘”，通常用于描述艺术作品或文字对事物的详细描绘。

例如：The p本人nting depicts a beautiful countryside scene.（这幅画描绘了美丽的乡村风景。

）5. emphasizeemphasize是一个动词，意思是“强调”或“着重”。

当我们想要强调某个观点或事实时，可以使用这个词。

例如：The speaker emphasized the need for urgent action.6. efficientefficient是一个形容词，意思是“高效的”或“有效率的”，用于描述某个系统或过程能够在少量资源下达到最大产出。

例如：The new system is more efficient than the old one.7. factofacto是拉丁语中“事实”的意思，通常用于表示某个观点或说法是根据实际情况而非猜测得出的。

例如：The decision was made based on the fact that the project was behind schedule.8. simulatesimulate是一个动词，意思是“模拟”或“模仿”，用于描述通过模拟实验或情况来研究某个问题或情况。

写去重庆旅游的一篇英语作文七十字左右

写去重庆旅游的一篇英语作文七十字左右I. IntroductionIntroduction: An overview of the trip, expressing anticipation and excitement.Inroduction: 对此次旅程的概述，表达期待与兴奋之情。

A visit to Chongqing, the sprawling metropolis nestled in the heart of China's mountainous southwest, is an adventure that combines the allure of ancient history with the dynamism of modernity. As my plane descended into this city known as the "Mountain City," I couldn't help but feel a surge of anticipation, eager to explore its unique landscape, rich cultural heritage, and tantalizing cuisine.II. Exploring the Cityscape: A Symphony of Hills and RiversExploring the Cityscape: 描述重庆独特的山城地貌及两江风光。

Chongqing's topography is a testament to nature's grandeur. The city sprawls across steep hillsides, valleys, and along the confluence of the Yangtze and Jialing rivers,creating a stunning urban vista that defies conventional cityscapes. A ride on the iconic cable car offered a breathtaking perspective, as it glided above bustling streets, soaring skyscrapers, and verdant parks, all harmoniously coexisting amidst the undulating terrain. The city's illuminated skyline at night, reflected in the calm river waters, was a mesmerizing spectacle, painting a vivid portrait of Chongqing's fusion of natural beauty and urban sophistication.III. Delving into History: Timeless Echoes of a Rich PastDelving into History: 探访重庆的历史遗迹，感受其深厚文化底蕴。

复分解反应釜的种类

复分解反应釜的种类英文回答：There are several types of multiphase reactors used in the chemical industry for complex reactions, including complex decomposition reactions. One such type is the multiphase stirred tank reactor, also known as the multiphase reactor vessel or multiphase reaction kettle. This type of reactor is widely used in various industries due to its versatility and efficiency.The multiphase stirred tank reactor consists of a vessel or kettle equipped with an agitator, which provides the necessary mixing and agitation for the reaction. The vessel is designed to withstand the high pressures and temperatures that may be required for the reaction. The agitator ensures proper mixing of the reactants and helps in the distribution of heat and mass transfer.There are different configurations of multiphasestirred tank reactors, depending on the specific requirements of the reaction. One common configuration is the gas-liquid stirred tank reactor, which is used for reactions involving a gas phase and a liquid phase. In this type of reactor, the gas is sparged into the liquid phase, and the agitator helps in dispersing the gas bubbles and promoting the mass transfer between the phases.Another type of multiphase stirred tank reactor is the liquid-liquid stirred tank reactor, used for reactions involving two immiscible liquid phases. The agitator helps in creating a fine dispersion of one liquid phase in the other, increasing the interfacial area and promoting the reaction between the phases.Furthermore, there are also multiphase reactors that involve solid phases along with liquid or gas phases. These reactors are known as gas-solid or liquid-solid stirred tank reactors. In these reactors, the agitator helps in maintaining a uniform suspension of solid particles in the liquid or gas phase, ensuring efficient contact and reaction between the phases.In addition to multiphase stirred tank reactors, there are other types of multiphase reactors used for complex decomposition reactions. These include fixed-bed reactors, fluidized-bed reactors, and packed-bed reactors. Each of these reactors has its own advantages and is suitable for specific types of reactions.Overall, the choice of multiphase reactor for a complex decomposition reaction depends on various factors such as the nature of the reactants, reaction kinetics, heat and mass transfer requirements, and the desired product specifications. The selection of the appropriate reactor type is crucial for achieving efficient and cost-effective reaction processes.中文回答：化工行业中用于复杂分解反应的多相反应器有几种类型。

进出口专业英语词汇(C4)

进出口专业英语词汇(C4)进出口专业英语词汇(C4)进出口专业英语词汇(C4)chloronaphthalene wax 卤蜡chloronaphthalene 氯萘chloroneb 地茂散chlorononane 氯壬烷chloronorgutta 氯丁橡胶chlorooctadecane 氯代十八烷chlorooctane 氯辛烷chloroparaffin 氯化石蜡chloropentane 氯戊烷chlorophacinone 氯鼠酮chlorophenocarb 氯草灵chlorophenol red 氯粉红chlorophosphonazo 偶氮氯膦chlorophyll paste 糊状叶绿素chlorophyll toothpaste 叶绿素牙膏chlorophyll 叶绿素chlorophyllide 叶绿素酸酯chloropicrin 氯化苦杀虫剂chloroplastic pigment 叶绿素颜料chloroplatinate 氯铂酸盐chloroplatinic acid 氯铂酸chloroplatinous acid 氯亚铂酸chloropon 茅滴混剂chloroprednisone 氯泼尼松chloroprene gum 氯丁橡胶chloroprene latex 氯丁二烯乳胶chloroprene rubber adhesive agent 氯丁胶粘剂chloroprene rubber 氯丁二烯橡胶chloroprene 氯丁二烯chloroprocaine 氯普鲁卡因chloropropane 氯丙烷chloropropanol 氯丙醇chloropropene 氯丙烯chloropropylate 丙酯杀螨醇chloropyramine 氯吡拉敏chloropyrilene 氯吡林chloroquine phosphate injection 磷酸氯喹注射液chloroquine phosphate syrup 磷酸氯喹糖浆chloroquine phosphate tablet 磷酸氯喹片chloroquine phosphate 磷酸氯喹chloroquine sulfate 硫酸氯喹chloroquine 氯喹chloroquinum 氯喹chloroserpidine 氯舍平chlorosilane 氯硅烷chlorosuccinimide 氯代琥珀酰亚胺chlorosulfonic acid 氯磺酸chlorosulphonated polyethylene epoxy resin anticorrosive paint 氯磺化聚乙烯环氧树脂防腐漆chlorosulphonated polyethylene 氯磺化聚乙烯chlorothalonil 百菌清杀菌剂chlorothene nu 三氯乙烷chlorothiaxanthenone 氯硫杂蒽酮chlorothiazide 氯噻嗪chlorothion 氯硫磷杀虫剂chlorothionite 氯钾胆矾chlorothymol 氯麝酚chlorotitanate 氯钛酸盐chlorotoluene 氯甲苯chlorotrianisene 氯烯雌醚chlorotriethylamine hydrochloride 氯代三乙胺盐酸盐chlorous acid 亚氯酸chlorowax 氯化石蜡chloroxuron 枯草隆除草剂chloroxylene 氯二甲苯chloroxylenol 氯二甲酚chloroxynil 羟敌草腈chlorozirconate 氯锆酸盐chlorparacide 氯杀螨chlorphenamidine hydrochloride 杀虫脒盐酸盐chlorphenesin carbamate 氯苯甘油氨酯chlorphenesin 氯苯甘油醚chlorphenethazine 氯芬乙嗪chlorpheniramine maleate compound 复方扑尔敏chlorpheniramine maleate 扑尔敏chlorphenoxamine 氯苯沙明chlorphenprop methyl 燕麦酯除草剂chlorphentermine 对氯苯丁胺chlorpheramine maleate 扑尔敏chlorphonium 氯化磷chlorphoxim 氯腈肟磷chlorpicrin 氯化苦杀虫剂chlorproethazine 氯丙沙嗪chlorproguanil 氯丙胍chlorpromazine hcl injection 盐酸氯丙嗪注射液chlorpromazine hcl tablet 盐酸氯丙嗪片chlorpromazine hydrochloride 盐酸氯丙嗪chlorpromazine 氯丙嗪chlorpropamide 氯磺丙脲chlorprophame 氯苯胺灵除草剂chlorprothixene 泰尔登chlorpyripos 毒死蜱chlorquinaldol 氯喹那多chlorquinox 四氯喹恶啉chlorsilane 氯硅烷chlorsulfonic acid 氯磺酸chlorsulphacide 氯杀螨chlortalidone 氯塞酮chlortetracycline eye ointment 金霉素眼药膏chlortetracycline hydrochloride 盐酸金霉素chlortetracycline 金霉素chlorthal dimethyl 二甲基敌草索chlorthal methyl 甲基敌草索chlorthal 敌草索chlorthalonil 百菌清杀菌剂chlorthenoxazine 氯西诺嗪chlorthiamid 草克乐chlorthiepin 硫丹杀虫剂chlorthion 氯硫磷杀虫剂chlortoluron 绿麦隆chlortrimeton 扑尔敏chlortylam 氯灭杀威chlorvar granular 钠硼定混剂chlorylene 三氯乙烯chlorzoxazone 氯唑沙宗chlothizol 灭草荒chock 止动器chocked-flow turbine 阻流式涡轮机chocolate agar 巧克力琼脂chocolate bar moulder 巧克力块浇模成型机chocolate bar wrapper 巧克力块包装机chocolate bar wrapping machine 巧克力块包装机chocolate bean 巧克力豆chocolate biscuit 巧克力饼干chocolate box 巧克力盒chocolate brittle 脆心巧克力chocolate brown paint 棕褐色漆chocolate butter cake 巧克力奶油酥chocolate cake 巧克力蛋糕chocolate candy 巧克力糖chocolate center 巧克力夹心chocolate centred with famous chinese liqueur 酒心巧克力chocolate cigar 巧克力雪茄chocolate coated dragee 涂巧克力粒糖chocolate coffee 巧克力咖啡chocolate coin 金元巧克力chocolate colour cloth 巧克力色布chocolate cookie 巧克力曲奇chocolate cream biscuit 巧克力饼干chocolate cream 夹心巧克力chocolate crisp candy 巧克力酥糖chocolate dragee 巧克力粒糖chocolate egg 朱古力蛋chocolate essence 巧克力香精chocolate fudge 巧克力软糖chocolate honey cream biscuit 朱古力蜂乳夹心饼chocolate ice cream cone 朱古力甜筒chocolate ice cream 朱古力雪糕chocolate mass cleaning machine 巧克力糖料清洗机chocolate milk melonseed 奶油巧克力瓜子chocolate milk 巧克力奶chocolate patty 巧克力糖chocolate powder 巧克力粉chocolate roll with egg sesame 巧克力麻心蛋卷chocolate roll 巧克力蛋卷chocolate sundae 巧克力圣代chocolate syrup 巧克力糖浆chocolate toffee 巧克力太妃chocolate wafer cream 巧克力维福夹心饼干chocolate wafer 朱古力威化chocolate wrapping paper 巧克力包装纸chocolate 巧克力糖chocolate-coated candy 涂巧克力的糖果chocolate-coated ice cream 紫雪糕choice wool 上等毛choicest wool 最精选羊毛choke coil 扼流线圈choke filter 扼流圈滤波器choke flap 阻风门choke input filter 扼流圈输入滤波器choke modulator 扼流圈调制器choke piston 阻风活塞choke plate 阻风板choke stove 阻风加热器choke transformer 扼流圈变压器choke tube 阻尼管choke valve 阻风阀choke 节流栓choke-capacitance coupled amplifier 扼流圈-电容耦合放大器choke-condenser filter 扼流圈电容式滤波器choke-coupled amplifier 扼流圈耦合放大器chokeberry 花楸果choked-flow turbine 超临界压降涡轮机choker check valve 阻气单向阀choker 颈链choking winding 扼流线圈chokon 高频隔直流电容器cholagogic and lithagogue tablet 利胆排石片cholagogic tablet 利胆片cholecalciferol 胆骨化醇choledochoscope 胆管镜cholera vaccine 霍乱菌苗cholesterol ester 胆甾醇酯cholesteryl acetate 胆甾醇乙酸酯cholesteryl benzoate 胆甾醇苯甲酸酯cholesteryl bromide 溴化胆甾醇cholesteryl chloride 氯化胆甾醇cholesteryl nonanoate 胆甾醇壬酸酯cholesteryl oleate 胆甾醇油酸酯cholesteryl oleoyl carbonate 胆甾醇油酰基碳酸酯cholesteryl propionate 胆甾醇丙酸酯cholesteryl 胆甾醇基cholet 新奇花色手帕choli [印度妇女穿的)短袖小衫cholic acid 胆酸choline bromide 溴化胆碱choline chloride 氯化胆碱choline compound 复方胆碱choline gluconate 胆碱葡萄糖酸盐choline iodide 碘化胆碱choline magnesium trisalicylate 三柳胆镁choline salicylate 胆碱水杨酸盐choline theophyllinate 胆茶碱chom fibre 乔姆野菠萝叶纤维chondrin 软骨胶chondrodite 粒硅镁石chondroitin sulfate 硫酸软骨素chondrus crispus 角叉菜chooser 选择器chop block 砧板chop 图章chopass 高频隔直流电容器choppat 乔帕特轻塔夫绸chopped light power meter 断续光功率计chopped pork with ham 火腿猪肉chopped strand 短切原丝chopper amplifier 斩波放大器chopper bar fabric 压纱织物chopper mixer 斩拌机chopper monochromator 斩波单色器chopper switch with bakelete lid and porcelain bottom 胶盖瓷底闸刀开关chopper-bar recorder 点线记录器chopper-blender 切搅机chopper-stabilized amplifier 斩波稳定放大器chopping amplifier 斩波放大器chopping bit 冲击钻钻头chopping knife with wooden handle 木柄菜刀chopping knife 菜刀chopping machine 短切机chopping mill 切碎机chopping oscillator 断续振荡器chopstick rest 筷子架chopstick 筷子chord splice 桁弦接合板chore jacket 劳动茄克chorionic gonadotrophin 绒促性素chorograph 位置测定器chorycyclen 冰片杀虫剂chou 绣球christian dior cologne 苇娜古龙水christian dior parfum 苇娜香水christmas card 圣诞卡christmas crackers 圣诞爆竹christmas decorations 圣诞节装饰品christmas gift 圣诞节礼品christmas light set 节日灯christmas tree candle 圣诞树蜡烛christmas tree stand 圣诞树架christmas tree 圣诞树christobalite 方英石chro-mow 克罗莫铬钼钨钢chrochtron 摆线管chrogo 克娄勾牙医用合金chroma amplifier 色度信号放大器chroma demodulator 色度信号解调器chroma detector 色度信号检波器chroma oscillator 彩色信号振荡器chromador 克罗马多尔低合金高强度钢chromadur 克罗马杜尔高锰铬耐热钢chromagraph 电子分色机chroman 克罗曼8020型镍铬合金chromanin 克罗马宁电阻合金chromansil 克罗曼西尔铬锰硅合金结构钢chromaphon 畜虫磷chromascope 色质镜chromaskop 校色显示装置chromate 铬酸盐chromatic machine 彩色印刷机chromatic harmonica 半音阶口琴chromatic paper 彩色磨光纸chromatogram spectrophotometer 色谱分光光度计chromatograph 色彩计chromatographic analyzer 色谱分析仪chromatographic coulometric sulphur emission analyzer 色谱库仑法硫排放分析仪chromatographic desalting apparatus 色层脱盐仪chromatographic instrument 色谱仪chromatographic reactor 色谱反应器chromatography analyzer 色谱分析仪chromatography infrared analyzer 色谱法红外分析仪chromatometer 比色计chromatoscope 彩光折射率计chromatron 栅控色显像管chromax bronze 克罗马克斯含铬铝青铜chromax 克罗马克斯镍铬耐热钢chromazurine 铬天青chrome acid 铬酸chrome alloy 铬合金chrome alphatized steel α化铬钢chrome alum 铬矾chrome bed 镀铬床chrome black 铬黑chrome board 彩色石印纸板chrome brick 铬砖chrome carbide 碳化铬chrome collagen fibre 含铬的胶质纤维chrome complex dye 含铬染料chrome copper 铬铜合金chrome corundum brick 铬刚玉砖chrome dye 铬媒染料chrome fast green 铬坚牢绿chrome firebrick 铬砖chrome goat skin for gloves 铬鞣山羊手套革chrome green 铬绿chrome hardened steel 铬硬化钢chrome inter diameter micrometer 镀铬内径千分尺chrome iron 铬铁chrome leather gauntlets 铬革长手套chrome metal 金属铬chrome molybdenum steel 铬钼钢chrome molybdenum 铬钼chrome orange 铬橙chrome ore 铬矿砂chrome oxide grinding cream 氧化铬研磨膏chrome oxide 氧化铬chrome paper 铜版纸chrome permalloy 铬波莫合金chrome pig leather for gloves 铬鞣猪皮手套革chrome plate 克罗米上光板chrome plated adjustable wrench 镀铬活络扳手chrome plated brass flexible hose 镀铬铜软管chrome plated castor 镀铬脚轮chrome plated claw hammer 镀铬拔钉锤chrome plated combination pliers with transparent insulated handle 镀铬透明胶柄钢丝钳chrome plated dumbbell 镀铬哑铃chrome plated grating with filter 带滤网的镀铬滤栅chrome plated piston ring 镀铬活塞环chrome plated pvc flexible hose 镀铬聚氯乙烯软管chrome plated universal bevel protractor 镀铬万能角度尺chrome potash alum 铬明矾chrome red 铬红chrome refractory 铬质耐火材料chrome salt 红矾钾盐chrome semi-tanned cow split leather for working gloves铬鞣半硝黄牛二层劳动手套革chrome semi-tanned flesh side pig skin 铬鞣半硝反面猪皮chrome semi-tanned goat leather 铬鞣半硝山羊革chrome semi-tanned goat skin 铬鞣半硝山羊皮chrome semi-tanned pig skin for working gloves 铬鞣半硝猪工作手套皮chrome semi-tanned pig skin 铬鞣半硝猪皮chrome steel 铬钢chrome trioxide 三氧化铬chrome tungsten steel 铬钨钢chrome vanadium steel 铬矾钢chrome yellow paint 铬黄漆chrome yellow 铬黄chrome 铬chrome-alumina brick 铬铝砖chrome-alumina red 铬铝红chrome-alumina refractory 铬铝耐火材料chrome-aluminium wire 铬铝丝chrome-carbon steel 铬碳钢chrome-dolomite brick 铬白云石砖chrome-dolomite refractory 铬白云石耐火材料chrome-magnesia refractory 铬镁耐火材料chrome-magnesite brick 铬镁砖chrome-magnesite firebrick 铬镁耐火砖chrome-magnesite refractory 铬镁耐火材料chrome-manganese nitrogen steel 铬锰氮钢chrome-manganese steel 铬锰钢chrome-nickel alloy 铬镍合金chrome-nickel steel 铬镍钢chrome-plated household scissors 镀铬家用剪刀chrome-plated iron tube 镀铬铁管chrome-plated narrow blade scissors 镀铬柳叶剪刀chrome-plated vernier caliper 镀铬游标卡尺chrome-plated vernier slide calipers with depth rule 带深度尺的镀铬游标卡尺chrome-silica brick 铬硅砖chrome-silicon steel 铬硅钢chrome-silicon 铬硅chrome-silimanite refratory 铬硅线石耐火材料chrome-spinel brick 铬尖晶石砖chrome-tin red 铬锡红chrome-zircon red 铬锆红chromel 克罗麦尔镍铬耐热合金chromel-alumel thermometer 铬镍-铝镍温度计chromel-alumel 镍铬-镍铝合金chromet 克罗麦特铝硅轴承合金chromic acid battery 铬酸电池chromic acid cell 铬酸电池chromic acid 铬酸chromic anhydride 铬酐chromic bromide 溴化铬chromic chloride 氯化铬chromic fluoride 氟化铭chromic hydroxide 氢氧化铬chromic iron ore 铬铁矿chromic nitrate 硝酸铬chromic orange 铬橙chromic oxide red 氧化铬红chromic oxide 氧化铬chromic salt 铬盐chromic sulfate 硫酸铬chromic trioxide 三氧化铬chromiferous dye 含铬络合染料chrominance amplifier 色度放大器chrominance bandpass amplifier 色度带通放大器chrominance demodulator 色度解调器chrominance detector 色度信号检波器chrominance subcarrier generator 色度副载波发生器chroming machine 镀铬机chromite brick 铬砖chromite 亚铬酸盐chromium carbide 碳化铬chromium dioxide tape 二氧化铬磁带chromium firebrick 铬耐火砖chromium fog inhibitor 铬雾抑制剂chromium iron 铬铁chromium metal 金属铬chromium nitrate 硝酸铬chromium nitride 氮化铬chromium ore 铬矿砂chromium oxide green 氧化铬绿chromium oxide 三氧化二铬chromium plated handle 镀铬拉手chromium plated iron pipe 镀铬铁管chromium plated iron tube 镀铬铁管chromium potassium sulphate 硫酸铬钾chromium powder 铬粉chromium salt 铬盐chromium sesquioxide 三氧化二铬chromium silicide 硅化铬chromium stainless steel 铬不锈钢chromium steel 铬钢chromium sulfate basic 碱式硫酸铬chromium sulphate 硫酸铬chromium trichloride 三氯化铬chromium trioxide 铬酐chromium 铬chromium-51 sodium chromate 铬酸钠chromium-bronze 铬青铜chromium-copper wire 铬铜线chromium-copper 铬铜chromium-manganese steel 铬锰钢chromium-molybdenum steel 铬钼钢chromium-nickel alloy 镍铬合金chromium-nickel austenitic stainless steel 镍铬奥氏体不锈钢chromium-nickel electrode 铬镍焊条chromium-nickel steel 铬镍钢chromium-plated brass bib cock for urn 镀铬茶壶水龙头chromium-plated door pull 镀铬门拉手chromium-plated four-purpose vernier calipers 镀铬四用游标卡尺chromium-plated inside micrometer calipers 镀铬内径千分尺chromium-plated iron window catch 镀铬铁窗插销chromium-plated mild steel animal chain 镀铬软钢动物链条chromium-plated part 镀铬件chromium-plated steel-tube folding chair 镀铬钢管折椅chromium-plated thin-walled steel cylinder liner 钢质薄壁镀铬汽缸衬套chromium-plated tooth thickness calipers 镀铬镶合金齿厚卡尺chromium-plated tube 镀铬管chromium-plated universal bevel protractor 镀铬万能角规chromium-tungsten-vanadium steel 铬钨钒钢chromized steel 渗铬钢chromocarb 色烯卡chromocytometer 血红蛋白计chromogene dye 铬精染料chromograph printer 胶版印刷机chromograph 胶版复制器chromolitho grapher 锌版套色印刷机chromolithograph 彩色石印画chromometer 色度计chromone 色酮chromoradiometer x线量感色计chromoscope 色度镜chromotronic microjet printing machine 电控微喷射印花机chromotrope 铬变素chromotropic acid 铬变酸chromous acid 亚铬酸chromsol 克罗姆索尔易熔铬铁chromspun 克龙斯本纺前染色醋酯长丝和短纤维chronaxie meter 时值计chronite 克罗尼特耐蚀耐热合金chrono-interferometer 记时干涉仪chronograph stop watch 自动停止录时表chronograph 记时器chronographe 克罗诺格拉夫牌手表chronometer 精密计时计chronometric tachometer 记时式转速计chronopher 电动报时器chronoscope 计时器chronoscope 精密测时仪chronostop 计停秒表chronotron 延时器chrysanthemum cooky 菊花饼chrysanthemum crystal 菊花晶chrysanthemum electric fan 菊花牌电扇chrysanthemum extract 菊花浓汁chrysanthemum grain 菊花晶chrysanthemum honey 浓缩菊花蜂蜜chrysanthemum indicum 野菊花chrysanthemum juice 菊花露chrysanthemum stone carving 菊花石雕chrysanthemum stone 菊花石chrysanthemum tea 菊花茶chrysanthemum 菊花chrysarobin 柯桠素chrysatropic acid 柯阿托酸chrysoberyl 金绿玉chrysochalk 克里索乔克铜锌铅装饰合金chrysocolla 硅孔雀石chrysoidine crystal 盐基杏黄块chrysoidine hydrochloride 盐酸柯衣定chrysoidine 碱性桔橙chrysolite 黄橄榄石chryson 灭虫菊chrysophenine 直接菊黄chrysoprase 绿玉髓chrysorin 克里索林黄铜合金chrysotile 温石棉chrysotile asbestos fibre 温石棉纤维chuanposhi 穿破石chubut wool 丘布特绵羊毛chuck bucket elevator 链斗升料机chuck handle 卡盘扳手chuck lathe 卡盘车床chuck multi-tool semi-automatic lathe 卡盘多刀半自动车床chuck nut 夹头螺母chuck type copying lathe 卡盘仿形车床chuck type flapwheel 卡盘式页轮chuck type multi-tool lathe 卡盘多刀车床chuck work grinding machine 卡盘磨床chuck wrench 卡盘扳手chuck 夹盘chucker 卡盘车床chucking machine 卡盘式车床chucking multi-tool semi-automatic lathe 卡盘多刀半自动车床chucking reamer 机用铰刀chucunci fibre 丘孔西纤维chufa 油莎草chukker shirt 开领短袖马球衬衫chum salmon 大麻哈鱼chundari 琼达里杂色绸chunk breaker 大块破碎机chunk glass 玻璃毛坯chuquelas 条子丝棉交织塔夫绸church embroidery 教堂刺绣church linen 比索细薄亚麻布churn 搅乳器chute conveyer 往复摇动式运输机chute feeder 斜槽进料器chute liner 溜槽衬垫chute-barrel spooler 槽筒式络纱机chuting plant 斜槽运料设备chutney 酸辣酱chymopapain 糜木瓜酶chymotrypsin 糜蛋白酶chypre 素心兰ciba dye 汽巴染料cibacet dye 汽巴绥脱染料cibacrolan dye 汽巴克罗兰染料cibacron dye 汽巴龙染料cibacron pront dye 汽巴龙普龙特染料cibagene dye 汽巴勤染料cibanaphthol 汽巴纳夫妥染料cibanogene dye 汽巴诺勤染料cibanone dye 汽巴能染料cibantine dye 汽巴丁染料cibenzoline succinate 琥珀酸西苯唑啉cicada 蝉花cicada ecdysis 蝉蜕cicada shell 蝉衣cicada slough 金蝉衣cicador gauze 蝉翼纱ciciclia 西西克利亚花缎ciclacillin 环己西林ciclafrine 环拉夫林ciclofenazine 环丙奋乃静cicloheximide 环己米特ciclonicate 环烟酯ciclonium bromide 环隆溴铵ciclopirox 环匹罗司ciclosidomine 环西多明ciclotizolam 环氯唑仑cicrotoic acid 环丁烯酸cidena 锡德纳人造丝cider brandy 苹果汁白兰地cider cloth 稀平布cider vinegar 苹果醋cider 苹果酒cider-press cloth 果汁滤布ciderage 辣蓼cidial 稻丰散cifalon 西法纶聚酰胺纤维cigar box 雪茄盒cigar case 雪茄烟盒cigar cutter 雪茄烟切刀cigar flavour 雪茄香精cigar knife 雪茄刀cigar lighter 点烟器cigar tobacco 雪茄烟叶cigar tube 雪茄烟管cigar wrapping paper 雪茄烟纸cigar 雪茄烟cigaret cutter 切烟机cigaret roller 卷烟机cigarette box 香烟盒cigarette case with lighter 带打火机烟盒cigarette case 烟盒cigarette filter paper 卷烟滤嘴纸cigarette filter 卷烟过滤嘴cigarette holder 烟嘴cigarette in carton 条装卷烟cigarette in packet 包装卷烟cigarette in tin 听装卷烟cigarette lighter 打火机cigarette making machine 卷烟机cigarette making paper on reel 卷筒式卷烟纸cigarette mouthpiece paper 烟嘴纸cigarette packet 烟包cigarette pants 香烟裤cigarette paper in ream 令装卷烟纸cigarette paper 香烟纸cigarette tin 烟罐cigarette tissue machine 卷烟纸机cigarette tissue 卷烟纸cigarette tobacco 卷烟用烟叶cigarette utensil 烟具cigarette wrapping paper 卷烟包装纸cigarette 烟草cigarette-filter tow 卷烟过滤嘴丝束cigarette-packing machine 卷烟包装机cigarillo 小雪茄cilaperl 西拉珀尔棉织物cilasilk 西拉泡泡纱cilatex 西拉花布ciliate desert-grass 蜈蚣草cilice 马毛或驼毛布cilicium 山羊毛织物ciluan 清丹混剂cimarron 西马伦牌汽车cimemoxin 西美莫辛ciment-fondu 铝土水泥cimepanol 西美帕醇cimetidine 西咪替丁cimetropium bromide 西托溴铵cimicifuga foetida 升麻cimko 摄美牌照相机cinametic acid 桂美酸cinamiodil sodium 碘桂酸钠cinanserin 辛那舍林cinchocaine 辛可卡因cinchona bark 金鸡纳皮cinchona 金鸡纳树cinchonine hydrochloride 辛可宁盐酸盐cinchonine 辛可宁cincophene 辛可芬cindal 辛达尔变性铝合金cinder brick 煤渣砖cinder catcher 集尘器cinder concrete 煤渣混凝土cinder mill 煤渣粉碎机cinder pig iron 炉渣生铁cinder pig 夹渣生铁cindery coal 炼焦煤cine camera lens 活动摄影机镜头cine camera 电影摄影机cine editor 编辑机cine equipment 活动摄影用具cine film 电影胶片cine gun 照相枪cine high-speed camera 电影高速摄影机cine projector 电影放映机cine-sextant tracking telescope 电影六分仪跟踪望远镜cineangiography apparatus 血管荧光电影照相设备cinecromen 辛克罗孟cinematograph projector 电影放映机cinematograph 电影摄影机cinematographic camera 电影摄影机cinematographic film 电影胶片cineole 桉叶油素cinepazet 桂哌酯cinepazic acid 桂哌酸cinepazide 桂哌齐特cinerary urn 骨灰坛cinerious vulture tail 皂雕尾cinerious vulture wing and tail 皂雕翎cinerious vulture wing 皂雕翅cinesiaesthesiometer 肌动觉测量器cinesthesiometer 肌动觉测量器cinfenoac 辛芬酸cingestol 烯孕醇cinmetacin 桂美辛cinnabar seal-ink 朱砂印泥cinnabar sedative pill 朱砂安神丸cinnabar 朱砂cinnabaris 朱砂cinnamaldehyde 肉桂醛cinnamamide 肉桂酰胺cinnamate 肉桂酸盐cinnamaverine 桂马维林cinnamedrine 桂麻磺碱cinnamene 苯乙烯cinnamic acid 肉桂酸cinnamic alcohol 肉桂醇cinnamic aldehyde 桂醛cinnamomum petrophilum oil 岩桂油cinnamon bark 桂皮cinnamon leaf oil 红花油cinnamon oil 肉桂油cinnamon 肉桂cinnamonitrile 肉桂腈cinnamoyl chloride 肉桂酰氯cinnamoyl-n-pheny lhydroxylamine 肉桂铣苯基羟铵cinnamyl acetate 乙酸肉桂酯cinnamyl alcohol 肉桂醇cinnamyl aldehyde 桂皮醛cinnamyl chloride 肉桂酰氯cinnamylic acid 肉桂酸cinnarizine 桂利嗪cinnofuradione 辛呋二酮cinnoline 噌啉cinnopentazone 辛喷他酮cinopal capsule 喜宁保胶囊cinoxacin 西诺沙星cinoxate 西诺沙酯cinpropazide 桂丙齐特cinq trou lace 五角网眼花边cinquefoil 委陵菜cintramide 辛曲胺cintrifugal disintegrator 离心粉碎机cinzano red 红仙山露cinzano 仙山露味美思酒cio-vap 丁烯畏混剂ciodrin 丁烯磷杀虫剂cipher component 密码元件cipher device 密码装置cipher machine 密码机cipher message text transfer set 密码电报传递机cipher telephone 密码电话ciphering computer 加密计算机ciphering equipment 密码装备ciphering set 密码机ciphering teleprinter 加密电传机cipherware 密码器件cipolino marble 云母大理石ciporovica 锡普鲁维加地毯ciprefadol 环丙法多ciprofibrate 环丙贝特ciprofloracin 丙氟哌酸ciprofloxacin lactate injection 乳酸环丙沙星注射液cipropride 环丙必利ciproquinate 环丙喹酯ciproximide 环丙米特ciramadol 西拉马多circanetten-new tablet 强力痔根断片circassian 锡卡西昂棉毛交织呢circle absorber 环形吸收器circle bend 圆曲管circle brick 圆弧砖circle cutter 圆形切割器circle l 赛克尔l镍铬钢circle mouton collar pyramid coat 角锥形羊皮大圆领大衣circle polarimeter 圆周旋光计circle shears 圆盘剪切机circle skirt 圆形裙circle-shoulder jacket 圆肩茄克circlet 项圈circuit adapter 线路适配器circuit breaker 断路器circuit camera 旋转照相机circuit changer 转接器circuit closer 通路器circuit closing relay 通路继电器circuit detector 线路检电器circuit disturbance tester 线路故障测试器circuit opening relay 断路继电器circuit quality monitor 电路质量监控器circuit simulator 电路模拟器circuit tester 电路测试器circuit testing screwdriver 测电起子circuit tracing machine 电路绘图机circuit voltage stabilizer 电路稳压器circular accelerator 循环加速器circular air cushion 圆形气垫circular air mattress 圆形气垫circular auto-control heating oven 自动控制循环加热炉circular automatic glove machine 圆型自动手套机circular band dryer 循环带式烘干机circular barrel cleaning machine 圆形滚筒清理机circular barrel feeder 圆筒给料机circular birefringent fiber 圆双折射光纤circular blowing machine 循环吹膜机circular bodice machine 紧身胸衣圆型针织机circular box loom 回转梭箱织机circular 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interlock knitting machine 英脱洛克针织机circular knit hosiery 圆袜circular knitted fabric 圆形针织物circular knitted ribbed stockings 罗纹圆袜circular knitter 圆形针织机circular knitting machine 圆形针织机circular laser diode 圆形激光二极管circular level 圆水准器circular linear scanning converter 圆线性扫描变换器circular loom 圆型织机circular loop wheel machine 圆台车circular looper 圆型缝袜头机circular metal saw sharpening machine 金属圆锯片刃磨床circular milanese knitting machine 米兰尼斯圆型经编机circular milling machine 圆弧铣床circular nut with lock groove 带锁紧槽圆螺母circular nut 圆形螺母circular open top machine 圆型单面纬编机circular open-width sweater-strip machine 剖幅圆型计件外衣针织机circular plane 圆刨circular plastic woven bag 圆形塑料编织袋circular plate 圆板circular port slide valve 圆口滑阀circular pressing printer 圆盘平压印刷机circular protractor 圆分度器circular pulley 圆滑车circular pump 循环水泵circular purl machine 双针筒圆型针织机circular purl sweater-strip machine 双针筒计件衣坯针织机circular rack 圆齿条circular radiant type pipestill 圆形辐射式管式炉circular raising machine 回转起绒机circular reflector 圆形反射镜circular revolving box loom 回转式多梭箱织机circular rib fabric 圆筒形罗纹织物circular rib machine 圆形罗纹机circular rib top machine 圆型袜口罗纹机circular rope 圆钢丝绳circular saw bench 圆锯架circular saw blade for hot metal cut 金属热切圆锯片circular saw blade for wood 木工圆锯片circular saw blade grinding machine 金属圆锯片磨床circular saw blade 圆锯锯条circular saw sharpener 圆锯刃磨机circular saw 圆盘锯circular sawing machine 圆锯床circular scale 圆形刻度盘circular screen printer 圆网印花机circular screen 圆孔筛circular sealing connector 圆形密封连接器circular seam sealing machine 环形缝焊机circular seam-welding machine 环形滚焊机circular shears 圆盘剪床circular skirt 圆形喇叭裙circular slide rule 圆形计算尺circular softening machine 圆型软麻机circular solid fibre 圆实体纤维circular sprinkler 环形喷灌机circular stockings 圆袜circular stretching machine 环形拉幅机circular sweater-strip machine 圆型计件衣坯针织机circular sweep oscillator 圆扫描振荡器circular sweep phase shifter 圆扫描移相器circular sweep time modulator 圆扫描时间调制器circular table 圆形工作台circular trace indicator 圆形轨迹指示器circular transverse-field electromagnetic flowmeter 圆形横向磁场电磁流量计circular trowel 圆铁泥刀circular type draft cooler 环形通风冷却器circular valve 环形阀circular variable filter 圆形可变滤光片circular variable wavelength filter 圆形波长可变滤光片circular warp knitting machine 圆型经编机circular washer 圆垫圈circular washing machine 圆型洗涤机circular waveguide standing-wave detector 圆形波导管驻波检测器circular weaving machine 圆织机circular web 圆筒形针织物circular weft knitting machine 圆型纬编机circular x-ray diffraction camera 圆形x射线衍射照相机circular-cutter 圆盘铣刀circular-mesh single cylinder paper-making machine 圆网单缸造纸机circular-polarization optical fiber 圆偏振光纤circular-shaped potentiometer 圆形电位计circular-sheet tea cutter 圆片切茶机circularly polarized antenna 圆偏振天线circulating air compressor 循环空气压缩机circulating compressor 循环压缩机circulating door 旋转门circulating fan 循环风扇circulating heater 循环加热器circulating hydrogen compressor 循环氢压缩机circulating inspector 循环检测仪circulating jar 循环震击器circulating liquid laser cell 循环式液体激光管circulating liquid laser 循环式液体激光器circulating memory 循环存储器circulating mixer 循环混合机circulating oil cylinder 循环油缸circulating oil pump 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tanaka 青皮citrus unshiu marcovitch 温州蜜柑citrus wine 柑桔酒citsea cubeba oil terpene 山苍子油萜cittle fish oil 乌贼油city shorts 都市式短裤city 都市牌汽车civet cat fur 灵猫毛皮civet cat hair 灵猫毛civet cat leg skin plate 灵猫腿褥子civet cat neck skin plate 灵猫脖褥子civet cat skin plucked plate 拔染灵猫皮褥子civet cat skin 灵猫皮civet cat tail hair 灵猫尾毛civet 灵猫civic 市民牌汽车civil aircraft 民用飞机civilian clothes 便服civilian 平民牌汽车civitas 西维他牌手表civona 西伏奈粘胶空心丝civrine cameleon 双色或多色棱纹织物claborate-style painting 工笔画clack valve 瓣阀clad fibre 涂层纤维clad metal 复合金属clad sheet steel 包层薄钢板clad steel 复合钢cladded yarn 包芯纱cladding glass 包层玻璃cladding mode stripper 包层模消除器cladding steel 包覆钢claforan vial 注射用头孢氨噻肟clairanese 克莱雷尼斯claires 上等细亚麻布clam bucket 抓斗clam meal 蛤粉clam meat 蛤肉clam sauce 蛤蚧油clam shell 蛤壳式抓斗clam warm 沙蚕clam 蛤蜊clamdiggers 半长裤。

iprcl分子式

iprcl分子式IPRCL是一种有机化合物，其分子式为C3H3ClO。

它是一种无色液体，有刺激性气味。

IPRCL在化工、医药和农药等领域有广泛的应用。

下面将介绍IPRCL的性质、制备方法及其应用领域。

IPRCL的性质独特，具有较高的稳定性和可溶性。

在常温下，它可以与水和多种有机溶剂混溶。

IPRCL的沸点为97℃，密度为1.12 g/cm³。

它可以被光解为氯乙烯和乙醇。

此外，IPRCL可燃，遇到明火或高温时会燃烧。

IPRCL的制备方法有多种途径。

一种常用的方法是将氯乙酸与乙醇进行酯化反应，生成IPRCL。

反应的条件可以是在碱性催化剂存在下，加热反应。

另一种制备方法是将氯乙烯与乙醇进行加成反应，生成IPRCL。

这种方法需要在高温下进行反应，并且需要催化剂的存在。

IPRCL在化工领域有广泛的应用。

它可以作为有机合成的原料，用于制备多种有机化合物。

例如，IPRCL可以通过与胺类化合物反应，生成胺基乙酯。

这种反应可以用于合成医药中间体和染料。

此外，IPRCL还可以用于制备橡胶助剂、表面活性剂和塑料添加剂等。

在医药领域，IPRCL也有一定的应用。

它可以作为一种溶剂，用于制备药物和医疗器械。

同时，IPRCL还可以作为一种药物的中间体，用于合成具有生物活性的化合物。

例如，IPRCL可以与氨基酸进行酯化反应，生成具有抗菌活性的化合物。

农药是IPRCL的另一个重要应用领域。

IPRCL可以用于制备杀虫剂、除草剂和杀菌剂等农药。

它可以通过与氨基化合物反应，生成具有杀虫活性的化合物。

此外，IPRCL还可以与一些酯类化合物反应，生成具有除草活性的化合物。

总的来说，IPRCL是一种重要的有机化合物，具有广泛的应用领域。

它的性质稳定，制备方法多样，可以用于化工、医药和农药等领域。

随着科学技术的不断进步，IPRCL的应用前景将会更加广阔。