5657| 6
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QT700-2熱處理,調(diào)質(zhì)后發(fā)現(xiàn)兩端硬度差大 |
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小黑屋|手機版|Archiver|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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