Parallel system, when a hydraulic oil supply to the actuator when a group entered the implementation of the components of the flow is only part of the hydraulic pump output flow.
并联系统中，当一台液压泵向一组执行元件供油时，进入各执行元件的流量只是液压泵输出流量的一部分。
Using constant pressure variables plunger pump, output pressure can keep constant and flow varies as per system's demand.
采用恒压变量柱塞泵，输出压力保持恒定，输出流量根据系统需要而变化。
High viscosity gear pump does not generate pressure, it is only the output flow. Pressure is low or no pressure, high viscosity gear wheel pump don't inhale the liquid or leakage is serious.
高粘度齿轮泵并不能产生压力，它只是输出流量。压力低或无压力，说明高粘度齿轮泵没有吸入液体或泄漏严重。
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