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以静压轴承和液压滑环的简化模型———旋转对称环形缝隙为例，结合Ｖｏｇｅｌ 粘温方程，提出了液压系统稳定工作点和液压油稳定有效粘度的概念，为合理地确定液压油粘度值提供了新的方法和依据。
Taking the simplified model of hydrostatic bearing and hydraulic slip ring --- rotational symmetric annular gap as an example, combined with Vogel viscosity-temperature equation, the concept of stable working point of hydraulic system and stable and effective viscosity of hydraulic oil are put forward. In order to reasonably determine the viscosity of hydraulic oil Value provides a new method and basis.