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請教師傅們砂帶機(jī)機(jī)身和主動、從動輪選用6061鋁合金還是45號鋼? |
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Archiver|手機(jī)版|小黑屋|機(jī)械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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