1549| 7
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廠房承受重量每平方500kg,機器重量2.5噸,大小1.4MX0.6M接觸面積,需要加多厚的鋼板? |
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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