Methods Systematic cluster analysis is used.
方法系统聚类分析。
The method of regional soil nutrient management was studied based on systematic cluster analysis.
探讨了基于系统聚类分析对大田小麦进行区域化土壤养分管理的方法。
Objective: To investigate the significance of systematic cluster analysis in classification of nutritive value in foods.
目的：探讨系统聚类分析方法在食物营养学价值评价中的意义。
The contents of trace, poisonous and harmful heavy metallic elements in stable bound-state sulfide in soils can be calculated by systematic cluster analysis.
采用系统聚类分析方法，能定量地分析稳定的硫化物结合态微量有毒有害重金属元素的数量。
The contents of trace, poisonous and harmful heavy metallic elements in stable bound-state sulfide in soils can be calculated by systematic cluster analysis.
采用系统聚类分析方法，能定量地分析稳定的硫化物结合态微量有毒有害重金属元素的数量。
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