6796| 16
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气缸能否活动端再真空中,缸体在大气环境中工作如图所示 |
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点评
图中描述错了真空度10^-3帕以上
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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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