并对影响城市空气质量的5个主要因素进行主成分分析，找出最能代表原来数据信息的2至3个因子代替原来的5个变量。
Then 5 main factors affecting urban air quality to principal component analysis identify the most representative of the original data instead of the 2 to 3 factors 5 variables.
目的通过对11类健康相关因子的负性发生率及其影响因素的试点研究，综合评估炼油企业职工的健康需求。
Objective to evaluate health requirements of workers in oil refinery enterprise comprehensively by the test site study on 11 sorts of negative health correlation factors and their affecting factors.
目的确定影响道路人工清扫过程扬尘大小的因素之间关系及排放因子量化模型。
Aim to analyze the relations of factors affecting the fugitive dust during road sweeping and bring up calculative models of discharging divisors.
影响地表径流的因素有气候、地质、植被等诸多因子，植被因素的影响甚为突出。
There are many different factors affecting overland flow, such as climate, geology and vegetation, among which vegetation type is a key factor.
预测模型可用来进行影响因素分析和保险基金与保险因子的测算。
The predicted model established in this study can be used to analyze the affecting factors on dental care utilization and to calculate the insurance funds and other factors.
也就是说，种植规模、气象因子、农业机械化程度是影响新疆棉花生产最主要的因素。
In other words, growing scale, meteorological factors, the degree of agricultural mechanization are the most important factors affecting cotton production in Xinjiang.
为探讨和研究影响村庄土地利用变化的驱动因子，以黔西县为例，采用综合分析法、文献资料法，对影响黔西县各村庄土地利用变化的影响因素进行了实证分析。
The factors of affecting land-use change of different villages were analyzed by using the comprehensive analysis method and document method in Qianxi county.
分析了影响增益饱和特性的几个因素：有源区截面积，顶层镜面反射率，泵浦功率，自发辐射因子。
Several factors affecting properties of gain saturation are analyzed, which are active region area, top mirror reflective, pump power, spontaneous emission factor,.
利用GIS空间浅析浅析功能，对各影响因子进行分类浅析浅析，将其对选线的适宜性程度转化为选线因素图层。
Using the functions of GIS spatial analysis, affecting factors are analyzed, transforming indirect suitability of its composition factors into alignment layer.
另一方面，随着生产力水平的提高和其他因素的影响，人类活动对耕地变化的贡献率不断增大，耕地变化影响因子的作用也存在明显的时间差异。
On the other hand, with enhancement of productive forces and change of other affecting factors, the proportion of human activities affecting on cultivated land continuously increases.
另一方面，随着生产力水平的提高和其他因素的影响，人类活动对耕地变化的贡献率不断增大，耕地变化影响因子的作用也存在明显的时间差异。
On the other hand, with enhancement of productive forces and change of other affecting factors, the proportion of human activities affecting on cultivated land continuously increases.
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