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AISI 4141 材料,,怎樣可以達到這么高的強度?----請教 |
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材料是AISI 4140,屈服強度820MPa(MIN),拉伸率14%,請問如果...
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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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