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.
作者研制的动态流量计是国内流量控制系统中所缺乏和急需的器件，已成功地应用在国产液压电梯流量反馈控制样机上。
This type of flow sensor is widely needed in the flow control systems and has been successfully used in the home-produced prototype hydraulic elevator with flow electrical feedback control system.
本系统使用最简单的轴流类滑套作为流量控制阀，用以封堵、隔离和选择油层，并采用全液压方式进行动作控制。
The system uses the simplest axial-flow sleeve as flow control valve to blank off, isolate and select reservoir. The system adopts all-hydraulic operation.
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