发布时间:2025-01-30 23:56:55
吊顶上的灯是不会掉下来的,灯一般是在楼顶上的打膨胀螺丝,然后受力点是系在膨胀螺丝上,不是受力在铝扣板上的。
木工台锯75电机用高转速还是低转速我自己做了一个台锯锯片直径一米试了两下电机就起不来了是
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