短語(yǔ)詞組短語(yǔ)ultimate load design [力]極限載荷設(shè)計(jì);極限荷載設(shè)計(jì)design ultimate load 計(jì)算極限載荷;設(shè)計(jì)極限荷載;設(shè)計(jì)極限負(fù)載DUL Design Ultimate Load 設(shè)計(jì)載荷極限 返回 ultimate design load