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直徑60的圓鋼長(zhǎng)度1000，調(diào)質(zhì)后校直，要用多少噸的壓力機(jī)？ |
Archiver|手機(jī)版|小黑屋|機(jī)械社區(qū) ( 京ICP備10217105號(hào)-1，京ICP證050210號(hào)，浙公網(wǎng)安備33038202004372號(hào) )
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發(fā)表于 2012-4-25 20:24:13
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