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墊圈的方向 |
點(diǎn)評
平墊對檢修有好處,,螺母和本體不容易銹死,,銹死也更容易拆解,可以不傷及主體,。彈墊近年聽說不好用,,不知道真假。彈墊如果壓平應(yīng)該可以,,就算材料不好失去彈性也不至于松脫吧,。
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