A quantitative study on flower taxonomic characters of Populus tomentosa.

毛白杨花器分类性状的数量化探讨.

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Both of quantitative study and qualitative study are used in the research.

调查方法主要是问卷调查辅以访谈.

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ObJective To quantitative study the effect of human resistin on cell proliferation and differentiation of adipocytes.

目的定量研究人抵抗素对脂肪细胞增殖与分化的影响.

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Quantitative study of non - point source pollution is of significance in effective management of water quality.

面源污染的量化研究对水质管理具有重要意义.

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