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 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；
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