在二沉池模拟中，指数模型和双指数模型较为实用且应用较多。
The exponential model and double exponential model were the most practical and applied models for secondary clarifier simulation.
本文提出了一种对双指数荧光衰减进行拟合及分析的较简便的有效方法。
This paper presents a simple and effective method for fitting and analysis of the kinetic model of double exponential fluorescence decay.
这种耦合关系在其演化周期内呈现出双指数函数的变化规律，其耦合演化轨迹是一条双指数曲线；
This kind of coupling relation takes on a double-exponential function changing law, and the evolutive track of the interaction between urbanization and eco-environment is a double-exponential curve.
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