micro-area chemical analysis 微区化学成分分析
Based on the field investigation and soil analysis, some soil physical and chemical properties in different agroforesty systems in northern area of Jiangsu province were studied.
采用野外调查与室内分析测定的方法，研究了苏北地区林粮间作地土壤理化性质。
Factor analysis was used for the data set of chemical components concentration of precipitation collected in Chengdu urban area.
本文对成都市区降水化学组分进行了因子分析。
The powders were tested by chemical composition analysis and construction analysis. The size of the powder, the purity and the specific area were all better than those of standard.
通过正交实验得出最佳反应条件，制得的超细氧化锌粉料经组分分析、结构分析表明，其粒径、纯度、比表面积和晶型均符合相关标准。
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