Finish the pneumatic design of all the functions of hill-drop drill, and produce the pneumatic circuit drawings.

对气动部分的各种功能进行了设计，并绘制出气动回路图。

youdao

Finish the pneumatic design of all the functions of hill-drop drill, and produce the pneumatic circuit drawings.

对气动部分的各种功能进行了设计，并绘制出气动回路图。

youdao