A.荷載最大值B.荷載等效值C.荷載標(biāo)準(zhǔn)值D.荷載設(shè)計(jì)值
A.長(zhǎng)細(xì)比λy B.等效臨界彎矩系數(shù)βb C.回轉(zhuǎn)半徑iy D.截面不對(duì)稱影響系數(shù)ηb
A.設(shè)計(jì)彎矩 B.跨中彎矩 C.最大彎矩 D.臨界彎矩