hydraulic directional control valve

基本解释

When a set of Hydraulic Elevators are used, then a hydraulic supply from a directional control valve is required.
当使用一套液压提升集时，那么一个提供液压动力的方向控制阀是必需的。
PLC, electro-hydraulic switch valve and proportional directional control valves were used to construct the automatic steering control system based on PD control algorithm.
由PLC、电控开关液压阀和比例方向液压阀组成自动转向控制系统，设计了PD转向控制算法；
www.agro-csam.org
This paper describes the differential load-sensitive valve control system is a bi-directional hydraulic cylinder, the key control component P-Q valve is particularly emphasized.
应用负载敏感控制理论的电液伺服控制系统是非常有前景的一项节能技术。