针对目前钢轨助推器设计上存在的不足，利用液压恒功率调速原理，设计了长钢轨液压助推器。
In view of the shortcomings in the design of rail Pushers, a hydraulic pusher for long rail was designed according to the principle of hydraulic constant power speed regulation.
针对目前钢轨助推器设计上存在的不足，利用液压恒功率调速原理，设计了长钢轨液压助推器。
In view of the shortcomings in the design of rail Pushers, a hydraulic pusher for long rail was designed according to the principle of hydraulic constant power speed regulation.
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