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压差传感器的应用实现了负荷传感液压控制，使液压挖掘机获得最佳流量，提高了作业效率和复合操纵性，达到了节能的目的，促进了液压挖掘机的技术进步。
The application of differential pressure sensor realizes hydraulic control of load sensing, which makes hydraulic excavator obtain the optimal flow rate, improves work efficiency and compound controllability, achieves the purpose of energy saving, and promotes the technical progress of hydraulic excavator.