机械专业英语课件1
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这些设备设计的难度在于需要机、电、软三个相互交 叉却又明显属不同学科的专业知识和设计过程知识。
8
The design process
Paragraph 3:
Traditionally when we break down(分解) mechanical engineering into its various aspects, we decompose(分解) it by discipline: fluids, thermodynamics, mechanics etc.
But early in the twentieth century, electrical components were introduced in mechanical device.
但在二十世纪早期，电的部分被引入到机械设备中。
3
Since that time the discipline has undergone a steady transformation from purely mechanical to electro-mechanical (products).
上一课回顾
单词复习：
1
Lesson 1 Mechanical Design 机械设计
重点词汇： steady overlap lens/optical fry/predetermine/setting potential parameter/parametric m3- cubic metres
7
What makes the design of these devices difficult is the necessity for domain(专业) and design process knowledge in three overlapping(相互交叉) but clearly different disciplines.
想想看！例如照相机、复印机及许多“聪明”的玩具。
These products having mechanical, electronic, and software components are called mechatronic devices.
具有机械的、电的、软件部分的产品称为机电设备。
item(零部件) from a list such that the chosen item meets certain requirements. 选择设计意思是在满足某种要求的供选择项目中选择 一个或多个项目。
10
Biblioteka Baidu
Common examples are selecting the correct bearing from a bearing catalog, selecting the correct lenses(透镜) for an optical device, selecting the proper fan for cooling equipment, or selecting the proper heat exchanger(热交换器) for a process.
当我们按照传统的方式将机械工程分为各个方面时， 我们将其分为各个学科：流体力学、热力学、机械学 等。
9
In categorizing the types of mechanical design problems, this discipline-oriented(根据学科的) approach is not appropriate.
然而，设备无论电子设备如何发展，仍然需要机械设 备用来制造和装配，需要箱体类的机械零件用来安装。
4
Additionally, nearly all products require mechanical interface(人机接口) with humans.
另外所有产品都需要机械的界面与人类交互。
从那时起，这门学科经历了从纯粹的机械产品到机电 产品的平稳转变。
However, no matter how “electronic” devices become, they still require mechanical machinery for manufacture and assembly and mechanical components for housing.
2
Paragraph 1
For most of history, the discipline of mechanical design required knowledge only of mechanical parts and assemblies.
历史上大部分时间内，机械设计学科需要的知识仅 仅局限于机械零件及其装配。
Many electro- mechanical products now have microprocessor as part of their control system.
许多机电产品现在都有作为它们控制系统一部分的微 处理器。
6
Consider, for example, cameras, office copiers, and our many "smart"(智能的) toys.
在对机械设计进行分类时，这种面向学科的方法已不 再适用。
Consider, for example, the simplest kind of design problem, a selection design problem.
想一想！例如一种最简单的设计——选择设计。 Selection design means picking one (maybe more)
5
Paragraph 2:
In the 1960s and 1970s another discipline was added to electro-mechanical design, namely, software design.
在二十世纪六、七十年代，另外一个学科又加入到电 动机械设计中来，也就是软件设计。
8
The design process
Paragraph 3:
Traditionally when we break down(分解) mechanical engineering into its various aspects, we decompose(分解) it by discipline: fluids, thermodynamics, mechanics etc.
But early in the twentieth century, electrical components were introduced in mechanical device.
但在二十世纪早期，电的部分被引入到机械设备中。
3
Since that time the discipline has undergone a steady transformation from purely mechanical to electro-mechanical (products).
上一课回顾
单词复习：
1
Lesson 1 Mechanical Design 机械设计
重点词汇： steady overlap lens/optical fry/predetermine/setting potential parameter/parametric m3- cubic metres
7
What makes the design of these devices difficult is the necessity for domain(专业) and design process knowledge in three overlapping(相互交叉) but clearly different disciplines.
想想看！例如照相机、复印机及许多“聪明”的玩具。
These products having mechanical, electronic, and software components are called mechatronic devices.
具有机械的、电的、软件部分的产品称为机电设备。
item(零部件) from a list such that the chosen item meets certain requirements. 选择设计意思是在满足某种要求的供选择项目中选择 一个或多个项目。
10
Biblioteka Baidu
Common examples are selecting the correct bearing from a bearing catalog, selecting the correct lenses(透镜) for an optical device, selecting the proper fan for cooling equipment, or selecting the proper heat exchanger(热交换器) for a process.
当我们按照传统的方式将机械工程分为各个方面时， 我们将其分为各个学科：流体力学、热力学、机械学 等。
9
In categorizing the types of mechanical design problems, this discipline-oriented(根据学科的) approach is not appropriate.
然而，设备无论电子设备如何发展，仍然需要机械设 备用来制造和装配，需要箱体类的机械零件用来安装。
4
Additionally, nearly all products require mechanical interface(人机接口) with humans.
另外所有产品都需要机械的界面与人类交互。
从那时起，这门学科经历了从纯粹的机械产品到机电 产品的平稳转变。
However, no matter how “electronic” devices become, they still require mechanical machinery for manufacture and assembly and mechanical components for housing.
2
Paragraph 1
For most of history, the discipline of mechanical design required knowledge only of mechanical parts and assemblies.
历史上大部分时间内，机械设计学科需要的知识仅 仅局限于机械零件及其装配。
Many electro- mechanical products now have microprocessor as part of their control system.
许多机电产品现在都有作为它们控制系统一部分的微 处理器。
6
Consider, for example, cameras, office copiers, and our many "smart"(智能的) toys.
在对机械设计进行分类时，这种面向学科的方法已不 再适用。
Consider, for example, the simplest kind of design problem, a selection design problem.
想一想！例如一种最简单的设计——选择设计。 Selection design means picking one (maybe more)
5
Paragraph 2:
In the 1960s and 1970s another discipline was added to electro-mechanical design, namely, software design.
在二十世纪六、七十年代，另外一个学科又加入到电 动机械设计中来，也就是软件设计。