9910| 13
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板厚越厚,屈服強度越小? |
點評
當然有關系,見四樓回復
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點評
你沒有回答樓主的問題
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點評
多層薄板結構
評分
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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