計(jì)算公式:W=0.00617d2說(shuō)明:理論質(zhì)量按密度7.85g/cm3計(jì)算無(wú)縱肋鋼筋預(yù)應(yīng)力混凝土用熱處理無(wú)縱肋鋼筋的尺寸及質(zhì)量公稱直徑d1、d2/mm截面積/mm2理論質(zhì)量W/kg1m6m7.5m68.228.2752.810.2300.4321.3802.5441.7253.180 (共 142 字) [閱讀本文] >>
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 計(jì)算公式:W=0.00617d2說(shuō)明:理論質(zhì)量按密度7.85g/cm3計(jì)算無(wú)縱肋鋼筋預(yù)應(yīng)力混凝土用熱處理無(wú)縱肋鋼筋的尺寸及質(zhì)量公稱直徑d1、d2/mm截面積/mm2理論質(zhì)量W/kg1m6m7.5m68.228.2752.810.2300.4321.3802.5441.7253.180 (共 142 字) [閱讀本文] >>