Otherwise, based on DEM, digital model of KSD distribution, digital Se model and profile-map analysis, the research has a quantitative analysis of macro change rule in microelement distribution.
另外，建立了数字高程模型、数字克山病分布模型、数字硒模型并作剖面图分析，定量分析了地形与微量元素分布的宏观变化规律。
According to the catastrophe rule of pest in agriculture the qualitative and quantitative catastrophe model was set up and the sudden change region was determined.
在农业病虫害突变规律的研究基础上，建立了定性与定量的尖角突变模型，确定了各病虫的突变区域。
This paper will change the qualitative analysis model of the books' circulating avail to quantitative analysis model. It put forward a mathematical model through analyzing…
本文将改变图书流通效用分析的定性分析方式，改定性分析为定量分析，通过图书流通效用指标分析，提出一种数学模型。
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