... time-varying parameter 随时间变化的参数 ; slowly varying parameter 慢变参数 Varying parameter models 变动参数模型 ...
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这种组合预测方法根据以往的全部历史数据，利用数值计算的手段决定组合系数函数中的参数，于是组合系数随时间的推移而变化。
Using all the historical data, this method can decide the parameters of the combinational coefficient function, so that the combinational coefficient varies as the time goes.
分析了拐角频率和应力降随时间的变化趋势，并讨论了震源参数相互之间的关系。
The variation of corner frequency and stress drop with time are analyzed, and the relations between focal parameters are discussed.
NACA0012和PROF叶栅在不同折合频率下气动参数随时间的变化表明，折合频率是影响叶栅颤振的重要因素。
The variation of aerodynamic parameters of cascade NACA0012 and PROF under different reduced frequency shows that the reduced frequency is an important factor that influences the flutter.
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