最新专业英语词汇-1讲学课件

switch on (off )
开（关）
a series of
一连串的
morse code
莫尔斯电码
operator
话务员
专业英语
Any process of superimposing some pattern on the continuous e. m. wave which allows information to be carried is called modulation. We say the carrier wave is modulated. To modulate a carrier wave all we need to do is to vary a property of the wave in a controlled way.
专业英语
专业英语
专业英语
专业英语
专业英语
Keywords: 告警模块 格式转换 隔行扫描 个人编码 个人识别码 工程手册 工具软件 个人通信网，专用通信网
Alarm module Format Conversion Interlace Scanning Personal Number Personal Identity Number Engineering Manual Tool Software Personal Communications Network
superimpose modulation carrier wave property in a controlled way
迭加 调制 载波 特性，性质 有控制地
专业英语
Thus, if we vary its amplitude we produce amplitude modulation(a.m.), if we vary its frequency we produce frequency modulation(f. m.), and if we vary its phase we have phase modulation.(p. m).
专业英语
Keywords: 光通道 光网络单元 光无源器件 光纤 光纤包层 国标 国际电信联盟 国内长途号码
Optical channel Optical Network Unit Optical Passive Devices Optical Fiber/Optic fiber Cladding of Fiber National Standard International Telecommunications Union National Toll Number
专业英语
If a transmitting aerial radiates a constant amplitude e. m. wave it conveys little information to the receiver.
transmit
发射，传播
aerial
天线
radiate
辐射
constant
专业英语
Keywords: 工业水平尺 工作波长 工作单元 功率分配结构 公用密钥,公开密钥 供参考 共享内存 共享资源
Industrial horizontal ruler Working wavelength working unit Distributed Power Architecture Public key For reference Shared Memory Shared Resource
专业英语词汇-1
专业英语
Keywords: aerial e. m. wave convey the morse code in a controlled Fra Baidu bibliotekay bang Quality of Service Service Status
adj. 天线的 n.天线 电磁波 vt.传递 莫尔斯电码 有控制的 n.响声 服务质量 服务状态
专业英语
Keywords: 光探测器 光开关 光缆 光连接器 光滤波器 光敏电阻 光耦合器 光收发模块
Photodetector Optical Switch Fiber Optic Cable Fiber Connectors Optical Filters Optical Resistor Optical Couplers Optical Transceivers
专业英语
Keywords:
规程
Procedure
规定容限,可接受容限
Tolerance
规范和描述语言 Specification & Description Language SDL
规则脉冲激励长期预测 Regular Pulse Excited Long-Term
Prediction 硅钢片
Silicon Steel Sheet
硅谷 硅控整流器
Silicon Valley Silicon Control Rectifier
专业英语
Keywords: 骨干网 固定比特率 固定卫星业务 固定信道分配 固态继电器 故障,错误 故障定位 故障申告受理
Backbone Network Constant Bit Rate Fixed Satellite Services Fixed Channel Allocation Solid-state Relay fault, error，failure, Bug Fault locating Fault Complaint Handling
常量，不变的
amplitude
振幅
e.m. wave=electromagnetic wave 电磁波
convey
传达
receiver
接收者，接收机
专业英语
The simplest way of sending information is to switch the transmitter on and off so that a series of 'dots and dashes' are transmitted --the morse code for example. This is a very common method of communicating between ships at sea , but it does require the operator to 'read' the code .