2008| 3
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一根2.5米长,最大直径约1米,重1204公斤的汽轮机的转子谁看得出型号 |
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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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