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.
跨临界二氧化碳制冷系统节流控制机构，主要包括节流阀、汽液分离器、电磁阀、混合器、热力膨胀阀等。
The throttle control mechanism of cross-critical CO2 refrigerating system includes mainly throttle valve, vapor-liquid separator, solenoid valve, mixer thermal expanding valve, etc.
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