所获数学表达式可为该类传感器的优化设计提供理论依据。
The mathematical expressions obtained provide theory basis for the optimum design of this type sensor.
该模型数学表达式具有半理论、半经验性质，能较好地反映弹塑性疲劳裂纹扩展的物理特征。
The mathematical expression of this model is half theoretical and half empirical in nature and can well represent the physical characteristics of EPFC growth.
并用方块图与反馈控制理论导出了这种调速回路速度刚性的数学表达式，估算了由负载引起的速度误差。
By block diagram and feedback-control principles expression is derived for speed-stiffness in the loop and speed error due to load calculated.
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