短語詞組短語combination lever bend arm [鐵路]合并桿彎臂lever r arm 杠桿臂lever shaft arm 杠桿軸臂shoe lever lifting arm 鞋形桿舉起臂stop lever shaft arm 停車手柄軸搖臂lever -arm ratlo 標(biāo)臂比whistle lever shaft arm 汽笛桿軸臂;翻譯lever rocking arm 閂柄杠桿 返回 lever arm