To smear solder flux paste or colophony on the PCB board of the dismantlement of BGA, remove the tin of welding plate of PCB board with ferrochromium;
在拆除BGA的PCB板焊盘上涂上助焊膏或松香水,用电铬铁将PCB板焊盘上的锡去除;
To paste the thick smear it on the nose blackhead contrast serious site, wait for 15 minutes.
将糊状物厚厚的涂抹在鼻部黑头对比严重的部位,等待十五分钟。
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