The hydraulic power motor has pressure regulating device.
液压马达具有压力调节装置。
C. pressure regulating device into automatic pressure regulating device and its principle analysis.
将手动直流调压装置改造为自动调压装置及原理分析。
This is sort of a pressure regulating device that maintains the pressure in the system at about twenty two hundred pounds.
这种调压机构，维持了系统里的压力，使它处于2200磅。
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