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倍速鏈求助 |
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點(diǎn)評(píng)
那至少也有兩倍速吧,就是少了大小輪之比。
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點(diǎn)評(píng)
確定滾輪不是懸空的嗎?滾輪在板上滾動(dòng),其他鏈條部分是沒(méi)有支承的,不然沒(méi)有倍速滾動(dòng)效果,只是工板隨鏈條移動(dòng),有個(gè)小的阻力就停下來(lái)了
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