The paper proposes a new method of using the ultrasonic-speed turbine as a power sourse and using the magnetic suspension bearing as the main back-up bearing for the rotation axis.

本文提出用永磁材料制作的永磁悬浮轴承作高速旋转轴的主要支承，轴流式超音涡转作回转轴的驱动动力源。

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This paper describes the new developed back oil circuit relief slow-restricted adapted for quantified pump hydraulic system regulating speed.

介绍了新研制的一种适用于定量泵液压系统调速的回油路溢流节流阀。

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