The kind of pump improves greatly the control efficient and control accuracy and simply the design of hydraulic system with proportional regulation and save the energy of hydraulic systems.
应用这种泵可大大提高液压系统控制效率、控制精度，简化了比例调节液压系统的设计，并使液压系统具有节能的功效。
An efficient safety regulation and maritime emergency aid system has been established.
初步建立高效的安全监管和海上应急救助体系。
The lapse speed operation ci pumps is a kind of energy-saving regulation. The economical operation of the system presuppose the determination of high-efficient lapse speed range of pumps.
水泵降速运行是水泵的一种节能调节方式，确定水泵的高效降速范围是保证系统经济运行的前提。
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