printed circuit board drill
... printed circuit amplifier 印刷电路放年夜器 printed circuit board drill 印刷电路板钻头 printed circuit board 印刷电路板 ...
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孔或焊，通过印刷电路板通常采用小钻头的硬质合金。
Holes, or vias, through a PCB are typically drilled with tiny drill bits made of solid tungsten carbide.
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