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教材提到:“鑄型、型芯阻礙鑄件收縮而產(chǎn)生的應力,稱為機械應力阻礙” 型芯阻礙... |
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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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