培训维修技术员，关于产品概念，原理和电路图。
Train repair technician on product concept, theory, circuit diagram.
简要介绍不间断电源的工作原理、故障分析和维修方法。
We introduce the work principle, analyzing trouble and maintenance of UPS.
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.
熟悉注塑机的结构原理；维修、保养和调校。
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.
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.
应用推荐