This paper presents a method of providing a virtual support for the rotor to assure the meshing stability of a pair of a pre determined spiral bevel gears in rotation.

提出一种在转子上设置虚拟支承的方法，以保证弧齿锥齿轮的啮合稳定性，并采用传递矩阵法，建立了弧齿锥齿轮-转子系统的振动模型。

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On the basis of theory of fuzzy probability, a preliminary discussion is carried out on the predictive method of stability on cylindrical spiral compression spring.

根据模糊概率理论，对圆柱形螺旋压缩弹簧稳定性的模糊概率预测方法进行了探讨，并给出了实例。

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Seal chamber pressure of a new double spiral groove face seal working under high velocity and pressure conditions may probably be disturbed in operation, which affects the seal stability.

一种用于高速高压等极端工况下的新型双螺旋槽端面密封在实际运行过程中密封腔压力会出现波动，从而影响密封稳定性。

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