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2008天:点红胶贴片元件不够贴板,造成元件和板面有缝隙,助焊剂渗透在里面,预热温度不足,过炉焊接时水汽蒸发造成炸锡了。助焊剂流量调小点预热温度调高看看,这种贴片元件如楼上讲正常是开双波的,^_^ (2014-08-12 08:02)
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