本文主要对大型折弯机关键部件虚拟设计制造系统的总体规划及构成、功能及应用进行了讨论。
The thesis mainly discusses the overall programming, construction, Function and application of the virtual design and manufacture system for the key parts of large size Press Brakes.
你需要能区分锅炉的主要构成部件以及相关功能，同时在锅炉起燃过程中了解相关安全预防措施也是必不可少的。
You should be able to identify the major parts of a boiler and its functions. Also, you will learn about safety precautions that must be observed during boiler light-off.
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