6334| 18
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活塞桿表面的這種損傷是如何形成的? |
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點評
應該是銹蝕,是由里到外還是由外到內?
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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