樟子松种群自疏规律为：平均胸径与密度的关系符合负幂函数模型。
Regulation of self- thinning is that relationship between DBH and average density of population accords with negative power function.
模型优化结果表明：在所有参与模拟的树冠生长的阶跃模型中，以幂函数模型为最优。
The optimizing model results show that the power model is the best one in all models tested.
用幂函数模型描述的回归曲线以及根据试验参数得到模拟曲线与试验值比较误差均较小。
The errors of the data obtained using the power function model are very small from the test data.
用幂函数模型描述的回归曲线以及根据试验参数得到模拟曲线与试验值比较误差均较小。
The errors are less as comparing the test data with regressive curve and simulative curve from test parameters using the power function model.
方法：利用10种曲线模型（指数模型、对数模型、幂函数模型等）拟合疟疾发病率曲线。
Methods:Adopting 10 kinds of curve fitting models, such as power model, index model, logarithm model and ect, to fit the curve of incidence of malaria.
在指数模型、幂函数模型、平方根模型、双曲线模型和对数模型等回归参数模型中，只有对数模型能较真实反映高填方地基工后沉降规律。
All exponential models, power function models, root-squaring models, hyperbolic models, but logarithm models can't disclose the laws of the post - construction settlement of the high embankment.
在指数模型、幂函数模型、平方根模型、双曲线模型和对数模型等回归参数模型中，只有对数模型能较真实反映高填方地基工后沉降规律。
All exponential models, power function models, root-squaring models, hyperbolic models, but logarithm models can't disclose the laws of the post - construction settlement of the high embankment.
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