机械工程专业英语第1课.ppt

机械工程专业英语第1课.pptTECHNICAL ENGLISH
MECHANICAL ENGINEERING
YAN NU
1
Learn the structure of technical paper;
Learn the method of writing technical paper;
Learn the method of translating technical paper;
Master machinery technical words.
Objective
a. 掌握一定量的与机械专业有关的常用单词和词组，并具有按照
构词法识别生词的能力, 能顺利阅读有关机械原版教科书、参考
书及其他参考资料；
能听懂与本专业有关、内容比较熟悉的英语会话、报道和讲座, 能用英语进行有关机械专业的一般性会话；
c. 能就与本专业有关的问题进行讨论、作简短的报告；
d． 能在阅读有关机械专业的书面材料时记笔记、写提纲、写论文摘要；
e． 能借助词典将有关机械专业的英语文章译成汉语, 并能将内容熟悉的有关机械专业的文字材料译成英语。
Introduction
2
A device that supports, guides, and reduces the friction of motion between fixed and moving machine parts.
Introduction
A quantity, such as mass, length, or speed, that is completely specified by its magnitude and has no direction.
Bearing 轴承
Scalar 标量
Worm：
tolerance：
3
College English
Common English Course
Technical English Course
Bilingual Course
Introduction
4
1 Machines & Work
Defined in the simplest terms, a machine is a device that uses force to accomplish something. More technically, it is a device that transmits and changes force or motion into work. This definition implies that a machine must have moving parts. A machine can be very simple, like a block and tackle to raise a heavy weight, or very complex, like a railroad locomotive or the mechanical systems used for industrial processes.
transmit： 1. 传播, 传染 2. 传导 3. 传（热、声等）；透（