11348| 45
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一個鋁件,一個銅件,兩者需要無縫貼合,并整體受力,有什么辦法 |
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小黑屋|手機版|Archiver|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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