短语词组短語railway axle box bearing 鉄路車輛軸箱軸承;鉄路軸箱軸承axle suspension bearing box 抱軸箱rolling axle suspension bearing box 滾動抱軸箱Plain bearing axle box 滑動軸承箱roller bearing axle box 滾子軸承軸箱 返回 axle box bearing