金属铜的电阻率低，所以在印制电路板中，用来制备铜箔及双面板、多层板的孔金属化方面采用镀铜工艺。
The resistance of the copper rate is low, so in printed circuit board, used to prepare copper foil and double panel, produce multilayer prototypes via metallization copper with on the process.
该区块是安装在大型面板的车床和百分表是用来寻找中心的气缸孔。
The block is mounted to a large faceplate on the lathe and a dial indicator is used to find the center of the cylinder holes.
暂时磁带模板，控制面板，并使用中心的力度，以标志孔和保证他们的位置不徜徉在钻井过程。
Temporarily tape a template to the control panel and use a center punch to mark the drill holes and insure that their location does not wander during drilling.
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