鋼材理論質(zhì)量的計(jì)算表3-8項(xiàng)目序號(hào)型材計(jì)算公式公式中代號(hào)鋼材斷面積計(jì)算公式1方鋼F=a2a—邊寬2圓角方鋼F=a2-0.8584r2a—邊寬;r—圓角半徑3鋼板、扁鋼、帶鋼F=a×δa—邊寬;δ—厚度4圓角扁鋼F=aδ-0.8584r2a—邊寬;δ—厚度;r—圓角半徑5圓 (共 576 字) [閱讀本文] >>
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 鋼材理論質(zhì)量的計(jì)算表3-8項(xiàng)目序號(hào)型材計(jì)算公式公式中代號(hào)鋼材斷面積計(jì)算公式1方鋼F=a2a—邊寬2圓角方鋼F=a2-0.8584r2a—邊寬;r—圓角半徑3鋼板、扁鋼、帶鋼F=a×δa—邊寬;δ—厚度4圓角扁鋼F=aδ-0.8584r2a—邊寬;δ—厚度;r—圓角半徑5圓 (共 576 字) [閱讀本文] >>