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GB/T 6557-1999 撓性轉子機械平衡的方法和準則 |
Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1，京ICP證050210號，浙公網安備33038202004372號 )
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發(fā)表于 2008-8-25 20:48:38
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