液压系统采用了先进的二通插装阀系统、进口高性能的电子泵技术，实现了主缸压力与流量的双闭环控制；
The press takes use of advanced two-way cartridge valve system and imported electric pump technology which can realize double closed loop control of pressure and flow rate.
该仪器采用二泵一阀系统，由单片机控制，具有双路信号实时采集和数据处理功能。
The unit which consisted of two peristaltic pumps and a multi function sampling valve was controlled by a single chip microprocessor.
一种基于PLC的电液自动控制系统，采用了电液比例阀的双闭环控制系统。
This paper introduces an electrohydraulic control system based on PLC. A double close - loop control system with electro - hydraulic proportional valve is adopted.
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