发布时间:2025-01-19 16:25:59
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!
农村坐北朝南的房子我家在东他家西共用一个竖墙但大门门墙他家的比我家高
2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59请问两个同样的喇叭怎样就是串联怎样就是并联我真不懂这个能用图给我解释下吗
2025-01-19 16:25:59 2025-01-19 16:25:59 2025-01-19 16:25:59