14330| 6
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何為冷激鑄鐵,比其它的鑄鐵有哪些優勢? |
點評
不知道這里的硬度為什么要用HS(肖氏)
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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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