pre-punching中文什么意思

预穿孔

• punch:     punch4 n. 1. ...
• punching:    板料冲压; 冲裁; 冲孔; 冲切; ...
• punching in:    打卡

例句与用法

1. Pre - punch register system
   打孔套印法
2. This is a special category of fpc , including single - sided , double - sided and multiple - sided pre - punch fpc . in some areas of the panel , circuits completely stay off the base material , leaving the copper wires naked
   透空线路板是柔性线路板中的一个特殊分类，它包括单层透空，双层透空和多层透空。