At present, the vacuum pressure impregnation technology is a new process in electrical trade.

真空压力浸渍是电工行业中目前应用的新技术、新工艺。

youdao

At present, the vacuum pressure impregnation technology is a new process in electrical trade.

真空压力浸渍是电工行业中目前应用的新技术、新工艺。

youdao