2086| 3
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鍛壓設(shè)備鍛造40Cr,,需要多大的力才能使他產(chǎn)生變形? |
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小黑屋|手機(jī)版|Archiver|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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