短語詞組短語friction n pulley cloth 澁帶呢friction n pulley 摩擦輪friction mandrel pulley 摩擦輪friction pulley friction wheel 摩擦輪diameter of friction pulley 摩擦輪直逕minor friction pulley 小擦輪major cycle friction pulley 大擦輪major friction pulley 大擦輪 返回 friction pulley