993| 2
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蝶阀手轮旋转通过丝杆上套个螺帽上下移动来确认状态 |
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点评
买了个M20的梯形牙丝杆,螺距4mm,套个螺母,螺母上焊个直径10指示条,指示牌中间留个12间隙的移动空挡。左右卡住,随便弄弄算了
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