8893| 9
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弹性模量与变形关系,请教 |
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点评
零件的刚性与什么因素有关?与材料的屈服强度有关么?
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小黑屋|手机版|Archiver|机械必威体育网址 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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