二阶因子分析表明，五因素模型又可划分为心理因子和社经因子。
The second order factor analysis indicated that the five factor model could also be divided into a psychological factor and a social economic factor.
通过统计学中的响应曲面法建立了螺旋铣削过程中切削力的二阶模型，并分析了主轴转速、每齿进给量、轴向和径向切削深度等因素对切削力的影响。
A quadratic model of predicting helical milling force was researched. The effects of spindle speed, feed per tooth, and axial and radial depth of cut were analyzed.
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