A.1B.0C.σaD.0.5
A.自重B.剪應(yīng)力C.主應(yīng)力D.壓力
A.主應(yīng)力和剪應(yīng)力B.剪應(yīng)力和主應(yīng)力C.壓應(yīng)力和剪應(yīng)力D.主應(yīng)力和壓應(yīng)力