发布时间:2025-01-19 16:27:54
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!
23岁的我好迷茫先前家人叫我进一家小型装饰搞装修有亲戚带路估计年龄小不懂事只知道玩没学成现在
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