說(shuō)明:1.理論質(zhì)量按密度7.85g/cm3計(jì)算?! ?.重軌:每米質(zhì)量≥24kg。a—軌高b—底寬c—頭寬d—腰厚重軌的尺寸及質(zhì)量型號(hào)基本尺寸/mm截面積/cm2理論質(zhì)量W/kgabcd1m7m10.5m12.5m6050454338100152145140134150132126114114737067706816.515.514.514.514.577.465.857.049 (共 328 字) [閱讀本文] >>