该文介绍了一种新型的数字式液压操纵系统，系统采用并联方案，以高速电磁阀为先导控制级，通过双节流阀进行操纵系统的压力、流量控制。
It is a parallel connection system and this system USES the high-speed valve as a pilot valve to control the twin throttle which controls the pressure and the flux of the hydraulic control system.
先导操纵的装载机液压系统大多采用先导阀和压力选择阀作为主要的先导液压元件，因此会出现一些由这些元件引起的整机故障。
Most loader hydraulic systems with pilot control use pilot valves and pres sures election valves as main pilot hydraulic components so some machine failure caused by those components may occurred.
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