铁道行业标准《机车、动车用柴油机零部件主轴瓦及连杆轴瓦》介绍
철도행업표준《궤차、동차용시유궤령부건주축와급련간축와》개소
Introducing the Railway Industry Standard "Main Bearing Shell and the Connecting Rod Bearing Shell of Locomotive and Motor Car Diesel Engines"