金属化孔,透孔

Could you tell me the price different between micro via PCB and through hole via PCB? 你能告诉我微过孔电路板与穿透式过孔电路板价钱的差别吗?

Reliability of plated through hole (PTH) has close relationship with technology parameters during manufacture process. 摘要镀通孔的可靠性与制造过程工艺参数有非常密切的关系。

Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors. 通孔盘状及平面阵列陶瓷多层电容器焊料所含的铅;

Keywords： printed circuit board, plated through hole, copper clad laminate, epoxy. 关键词：印刷电路板，贯孔，铜箔基板，环氧树脂

Propeller fans exhaust air through holes in the wall. 螺旋式通风机从壁孔中排出空气。