是精整加工或用模具在压力下除去金属.

Punching . Punching is the process of trimming or removing material with dies in a press.

是精整加工或用模具在压力下除去金属。

Punching . Punching is the process of trimming or removing material with dies in a press .

在电化学精整加工中，电场分布是影响加工质量和效率的关键因素，但是电场的变化又与多种因素有关。

Electric field distribution is the key factor that affects maching quality and efficiency in electrochemical finishing. Its change is influenced by many factors.