设备调试与现场维修维护，熟悉电路、油路、气路原理。

Equipment debugging and line maintenance maintenance, familiar electric circuit, oil duct, air course principle.

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为了正确使用与维修，需要说明其工作原理。

For proper use and maintenance, a description of how it works.

youdao

为了正确使用与维修，需要说明其工作原理。

For proper use and maintenance, a description of how it works.

youdao