2560| 6
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螺旋傳動(dòng)中的許用壓強(qiáng)怎么確定的,? |
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點(diǎn)評(píng)
你瞎�,。繘]完了,,狗幣,。不愿意理你了,,還跑之前的帖子下面回復(fù)。隨你吧,,想跟著爹就跟著爹跑,,別亂咬就行。
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點(diǎn)評(píng)
對(duì),,可以這么理解,,雖然表達(dá)不嚴(yán)謹(jǐn)
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