短語詞組短語tangential astigmatic line 切向像散線tangential focal line 切向焦線tangential points line 切點(diǎn)線tangential line load [力]切向線荷載;切向線荷載tangential line integral [數(shù)]切線線積分line of tangential curvature 切曲率的線 返回 tangential line