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.
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；
2
Variable Angle spiral method was used in a trial way in the design of the warped blader of solid - liquid two phase slurry pump.
采用变角螺旋线法对固液两相流渣浆泵扭曲叶片进行了尝试性设计，并初步总结了其设计方法和规律。
3
The paper introduces the development of the precise metering pump with two \ | way piston for sampling flue gases, its characteristic and applications.