Based on a supposed mathematical model, the calculation of parameters of opening function of Eustachian tube was elaborated.
根据设想的数学模型，探讨了耳咽管开闭功能参数的计算方法。
Automatic opening function is realized by contra - parallelogram mechanism. Optimal kinematic scheme is obtained by the kinematic and mechanical analysis of the contra-parallelogram.
自动开关门功能是采用反平行四边形机构实现的，针对这一机构的运动特性及力学性能进行了分析并得出最佳的运动方案。
Automatic opening function is realized by contra - parallelogram mechanism. Optimal kinematic scheme is obtained by the kinematic and mechanical analysis of the contra-parallelogram.
自动开关门功能是采用反平行四边形机构实现的，针对这一机构的运动特性及力学性能进行了分析并得出最佳的运动方案。
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