对于文中研究的液滴，无量纲完全蒸发时间随烟气温度变化呈指数递减规律。

For the droplet considered, the life time of droplet reveals the index declining rule along the flue gas temperature varying.

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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；

The density of power spectral entropy, on the whole, is an exponential decline curve with frequency augmentation without reference to water flooded extent.

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然后通过回归分析，可以发现该地区渗透系数随地应力值的增大呈负指数递减的变化规律。

By nonlinear regression analysis the change law is found that with the increase of geostress the permeability coefficient will decrease with negative exponential trend.

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