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。
When a set of Hydraulic Elevators are used, then a hydraulic supply from a directional control valve is required.
分析总结了多功能水力（泵）控制阀的工作原理和功能，详细阐述了其在江西新余钢铁有限责任公司第一动力厂高炉循环水系统中的使用情况和应用效果。
This paper analyzed the principle and function of the multi-purpose hydraulic control valve in the circulating-water system of BF and its application and effect was introduced.
液动力是设计、分析液压控制阀及液压系统考虑的重要因素之一。
The flow force is the important factor for designing and analyzing both the control valve and the hydraulic system.
在液压系统中，压力控制阀用于控制油缸驱动力。
Pressure control valves are used in hydraulic systems to control actuator force.
提供液压动力源所需的部件和控制阀的组合。
An assembly of components and controls necessary to provide a hydraulic power supply.
提供液压动力源所需的部件和控制阀的组合。
An assembly of components and controls necessary to provide a hydraulic power supply.
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