2936| 10
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求教:10年內最低氣溫-40℃的地區,用Q235鍍鋅角鋼做15m高的排放塔架,會不會出問題? |
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點評
有道理
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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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