Silt Density Index 淤泥浓度指数 ; 污染密度指数
population density index 人口稠密指数
sludge density index 污泥密度指数
electron density index 电子密度指数
stand density index [林] 林分密度指数 ; 林分密度指标
Visitor Density Index 游客密度指数
relative density index 相对密度指数
density index of resources 资源密度指数
comparative density index 人口密度比较指标
Repameterizing the average tree height growth model improved the fitting results a lot by introducing site index and density index variables.
引入地位指数和密度指数可大幅提高林龄单因变量平均高生长模型的拟合度。
Sludge density index (SDI) of effluent treated by improved formula is below 5.0, and it would meet the quality requirement of the influent of following reverse osmosis unit.
经改进配方，处理的排污水的污泥密度指数(SDI)小于5.0，能够满足后续反渗透单元的进水要求。
Single age variable stock volume growth model had low coefficient of determination, but it was improved a lot by introducing site index and stand density index in reparameterization.
林龄单因变量的蓄积量生长模型决定系数低，引入地位指数和密度指数再次参数化的生长模型可显著提高模型拟合度。
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