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论述了使用空气制动与电阻制动进行客货列车调速的不同方式及效果，阐明了采用电阻制动能确保客货列车实现安全正点平稳操纵等优越性能，并提出尽快推广使用的必要性。
The different ways and effects of using air brake and resistance brake to adjust the speed of passenger and freight trains are discussed. It is clarified that the use of electric resistance brake to ensure the smooth operation of passenger and freight trains, and other advantages, and the necessity of promoting the use as soon as possible .