求翻译：叶片泵是液压传动系统中广泛使用的动力元件。单作用叶片泵具有结构紧凑、重量轻、易于实现变量等优点。由于转子受到径向不平衡力的作用,使其工作压力的提高和使用寿命受到了极大的限制。是什么意思？

The vane pump is widely used in the hydraulic drive system, power components. Single-acting pumps with a compact, light weight, easy to implement variable advantages. The rotor by radial unbalanced force to make it work pressure increasing and service life has been greatly hampered.

Vane pumps, hydraulic drive system used in the power element. Single-acting vane pumps are compact, light weight, easy-to-achieve variable. As the rotors are radial unbalanced force the role of the working pressure and life were highly restricted.

The vane pump is in the hydraulic actuation system the widespread use power part.The list function vane pump has the structure compact, the weight light, easy to realize merits and so on variable.Because the rotor receives the radial direction not balance force the function, caused its working press

Vane pumps are widely used in the hydraulic transmission system of dynamic components. Single-acting vane pump with compact size, light weight, easy to realize the advantages of variables. Because of the effect of unbalanced rotor by radial force, its working pressure increased and life was greatly

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