4938| 17
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關于受沖擊環境的螺紋連接放松問題 |
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點評
有螺紋的
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點評
我也這么想過 就是不知道是不是
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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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