当前学习无产阶级专政理论的热潮,有力地促进着国民经济的发展。随着铁路运输量的增加,货车车辆在运行中,车底架各梁裂纹逐渐增多,直接威协着车辆的安全运行。因此,如何及时地发现这些故障,防止事故的发生,保证车辆安全运行,发展工农 The current upsurge in studying the theory of dictatorship of the proletariat has effectively promoted the development of the national economy. With the increase of railway traffic, the cracks of the beams on the chassis gradually increase with the operation of truck and vehicle, which directly assists the safe operation of the vehicle. Therefore, how to find out these faults promptly, prevent accidents, ensure the safe operation of vehicles and develop the workers and peasants