The density of power spectral entropy, on the whole, is an exponential decline curve with frequency augmentation without reference to water flooded extent.
功率谱密度不论水淹程度如何，整体为一随频率增大其能量按指数递减连续频谱；
A mathematical expression for such development indexes as recovery rates and rocovery percent of reserves is established on the basis of the FWG1 exponential decline development model.
本文提出了FWG1 幂指数递减开发模型，提出了开发速度，采出程度等开发指标的数学关系式。
Exponential, hyperbolic, and harmonic curve equations are often used to mathematically express the decline curve.
指数曲线方程、双曲线方程以及调和曲线方程常用来数学表达递减曲线。
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