pressure-compensated pump

Accumulator Tank: A sealed air chamber combined with a water reservoir provides expansion volume to reduce pump cycling from minor pressure changes and give a steady flow.

压力鼓：你个密封的空间结合水箱来提供充足的空间来减少泵循环时较小的压力改变和稳定的水流。

The characteristics of overflow valve Roots pump and ways of testing the overflow valve differential pressure are introduced. And it is pointed out that the overflow valve differential pressure of overflow valve Roots pump should be examined in test procedure.

介绍了带溢流阀罗茨泵的特点和溢流阀压差的试验方法，明确提出应对带溢流阀罗茨泵考核溢流阀压差。

Since then to actual production process in charge pump high-pressure system failure problems, through the design of the product to circuit analysis, combined with the technology process and grain round to test charge pump high-pressure system failure problem discussed.

此后以实际生产过程中所遇到的电荷泵高压系统失效问题，通过对产品的设计电路分析，结合工艺制程和晶圆测试对电荷泵高压系统失效问题进行了比较详细的分析。

After investigation and analysis, an improved measure was adopted in this system by adding vent pipe to oil tank at back position of pressure meter valve in each AC and DC oil pump exit, that has been proved correct in practice.

经研究分析，对系统进行了改造，将交、直流油泵压力表管阀门后各加装一条回主油箱的放空气管，实践表明是正确的。

Hoist, ventilator, air pressure machine and water pump are main fixed equipment which play important roles in coal mine production and consume most of the power. Traditional testing by manual is hard to satisfy the demands of determining operating status and technical parameters.

提升机、通风机、空压机、水泵是煤矿生产建设中起重要作用并且耗电量占很大比重的主要固定设备，对这些设备的运行状况和技术参数的确定，传统的人工测试已经很难满足。

This paper provides methods of calculating the ship ′ s ballast tank pressure loss. We can provide the theory basis to the ballast pump optimized design.

提供了一种计算船舶压载舱压力损失的方法，为船舶设计或选用更换压载水的压载泵提供参考。

The Newton iteration method is used to solve the economic pressure on the unknown node, so as to calculate the economic head loss and economic pipe diameter of each section, and economic head of second-stage pump station.

采用牛顿迭代法来求解各未知节点的经济水压，进而得出各管段的经济水头损失、经济管径和水源二级泵站的经济扬程。

A high-pressure wash water pump boosts raw water pressure the high pressure required for on-line washing.

高压吹洗水泵把工业水压力提高到 在线 冲洗所需的压力.

C-304 was improved by two ways: heat pump and different pressure. In the way of heat pump, the best operational condition was found by regulating outlet pressure of compressor and pressure-reducing value.

利用热泵和差压两种方式分别对C-304进行节能改进，热泵方式中，以压缩机和减压阀出口压力为主要调节变量，找到了最佳的操作条件，并比较两种热泵操作方式的优缺点。

An High pressure Gas Booster is an air pump that is driven by part of the incoming compressed air supply enabling it to cycle and pump the unbalance of the supply to a higher output pressure.

气体增压泵浦是一种打气筒，它是利用被压缩的空气来驱动在尚未达到平衡时的供给压进行循环性的打气，以提高输出侧的气体压力。