The active systems consist of several pumping systems of varying discharge pressure and flow rates, e. g., high head injection system, low head injection system.
能动系统由不同注入压力和流量的泵系统组成，如高压安注系统，低压安注系统。
Connecting with example this paper introduces the rational application of bypass pressure fixing and secondary pumping system in air conditioning s cooling water system of tall buildings.
本文结合实例介绍了旁通定压和二级泵系统在高层建筑空调冷水系统中的合理应用。
At the appropriate pressure, the chamber is opened to a high-vacuum pumping system that continues to reduce the pressure of the process chamber.
在适当的压强下，工艺室被接通高真空泵系统抽气，以继续降低工艺室的压强。
According to fact condition, check valves and solenoid valves are selected, hydraulic pressure pumping station which provides high reservoir and low reservoir for hydraulic system is designed.
根据实际情况选择了单向阀和电磁阀，设计了液压泵站，为整个液压系统提供了高压源和低压源。
The choice of pumping system depends on required pumping speed, ultimate pressure attainable (in a reasonable time).
泵系统的选择取决于所需要的抽速，能达到的极限压强(在适当的时间内)。
The main topics such as the sewerage system selection, design principles, sewerage network layout, pumping station layout, design of pressure pipe and gravity pipe.
重点阐述在管网布置时，应考虑地形及地质情况，优选重力流排水以节能，并且要兼顾考虑泵站的设置数量及管网建设的经济合理性；
In design of a vacuum system, generally it concerns distinguishing the regions of gas flow, the conductance of tube, the pumping speed and the pressure of system etc.
在真空系统的设计中，一般涉及到流态判别、流导、泵的抽速和系统的压力等参数。
By simulating the temperature of the cryopanel and the relation between the pressure and pumping gas speed of the cryopump, it was verified the vacuum system design was rational.
通过对低温泵的真空度及其抽速与液氦低温板温度的关系进行模拟，验证了真空系统设计的合理性。
Tornado-type wind-powered water-pumping system is a newly developed system. It consists of tornado-type tower and pressure difference water-elevating device.
旋风风能提水系统是一种新型风力提水系统，该系统由旋风塔和气压差提水装置组成。
Tornado-type wind-powered water-pumping system is a newly developed system. It consists of tornado-type tower and pressure difference water-elevating device.
旋风风能提水系统是一种新型风力提水系统，该系统由旋风塔和气压差提水装置组成。
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