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。
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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