发布时间:2025-01-19 16:16:35
胀好杯形口,母材插入深度,充氮,调整中性焰,加热,接近暗红色时,上磷铜焊条,将焊料熔化后流进缝隙,充满后,离火,降温后,停氮,OK,要多练习。祝你好运!
小区业主楼上空房跑水把楼下泡了楼下业主也长期无人居住楼下有责认吗
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