3390| 7
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各路大神,求教! |
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點評
疲勞測試才幾個月,蝸輪磨損應(yīng)該沒那么快吧?就算是蝸輪磨光了,摩擦系數(shù)降低了,也不會十次九次還能自鎖啊,要么自鎖要么不自鎖,你這一下自鎖,一下又不自鎖,感覺解釋不通。
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