It has been proved in experiments that these methods not only improve the efficiency of the hydraulicsystem, but also the controllability of excavator.
试验证明，这些措施的采用，不仅提高了液压系统效率，而且使挖掘机的操纵性得到明显提高。
2
The hydraulic fluid viscosity, the volumetric efficiency and the hydraulicsystem working efficiency drops, divulging increases, even causes the mechanical device to be unable the normal work.
液压油黏度、容积效率和液压系统工作效率均下降，泄漏增加，甚至使机械设备无法正常工作。
3
The optimal hydraulic design can effectively improve the outlet flow pattern of suction box to ensure better flow conditions for pump and raise the efficiency of pumping system substantially.