短语词组短语countershaft layshaft 副轴layshaft lever 副轴控制杆layshaft bearing 中间轴轴承;中间轴承layshaft gear cluster 中间轴齿轮组twin -layshaft configuration 双中间轴式结构layshaft drive gear 中间轴主动齿轮layshaft of geared head 车头箱中间轴 返回 layshaft