First in 2010 in its annual chose five indicators using clustering analysis will be a company for classification.
首先在2010年年报中选择了五项指标利用聚类分析将个公司进行分类。
Classification standards of indicators for soil quality evaluation were put forward and the situations of soil property of Hebei Plain were discussed.
提出了河北平原土壤质量评价指标的分级标准，依据该标准对河北平原典型土壤样品进行了单因素评价。
Classification standards of indicators for soil quality evaluation were put forward and the situations of soil property of Hebei Plain were discussed.
提出了河北平原土壤质量评价指标的分级标准，依据该标准对河北平原典型土壤样品进行了单因素评价。
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