短語詞組短語bending g force 彎力bending roll force 彎輥力bending -force 彎輥力bending internal force 彎曲內(nèi)力bending internal force drawing 彎曲內(nèi)力圖bending resistance force 彎曲阻力bending or axial force 彎矩與軸力positive bending force 正彎曲力roll -bending force 彎輥力 返回 bending force