• The water filling and pressure maintaining system mainly included: pressure pump and its control device, blockage end at the spiral case inlet, sealing ring on the stay ring of turbine, etc.

    蜗壳内充水保系统主要包括加压水泵及其控制装置蜗壳进口闷头、座环密封环等组成

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  • The inventive system can reduce gas pressure wave motion for maintaining stabilization of the pipeline gas pressure.

    发明系统减少气体压力波动用于维持管道气体压力的稳定

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  • A novel AC variable frequency converting control system with multiple functions is introduced. The system is suitable for maintaining constant oil pressure in main line of oil pipelines.

    阐述一种新型多功能交流变频调速控制系统用于保持油田输油管主干线油压恒定

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  • The hydraulic system has high efficiency, saving in energy and pressure-maintaining and overload protection functions.

    发明的折弯机液压系统具有高效节能的特点,还具有保压、过载保护功能

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  • The hydraulic system has high efficiency, saving in energy and pressure-maintaining and overload protection functions.

    发明的折弯机液压系统具有高效节能的特点,还具有保压、过载保护功能

    youdao

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