短語詞組短語trailer car brake 列車閘trailer service brake 拖車行車制動器trailer service brake circuit 拖車行車制動器回路trailer service brake reservoir 拖車行車制動器儲氣箱trailer brake line 掛車制動器管路trailer brake -valve 掛車制動器閥trailer brake arm 拖車制動聯(lián)臂trailer brake detail 掛車制動器 返回 trailer brake