在很多地方，计算机能做数百万人的工作，因此它被广泛地应用在各个科技领域——核物理、电气工程、机械工程等等。
In many places a computer does the work of a million persons, and so it is widely used in any branch of science and technology- nuclear physics, electrical engineering, mechanical engineering, and the like.
器具，工具用来进行或促进手工或机械工作的器具，例如锯子
A device, such as a saw, used to perform or facilitate manual or mechanical work.
机械学机器或机械工具的设计、制造和使用
Design, construction, and use of machinery or mechanical structures.
机械工将发动机中的油全部放走。
The mechanic drained all the oil from the engine.
