According to characteristics of IT enterprise,this article has chosen the achievement appraisal index,constructed a linear model for IT enterprises′ achievement appraisal and determined the weight of various indexes by the factor analysis and the factor revivification.
本文根据信息技术企业特点,选择了业绩评价指标,构建了一个IT企业业绩评价的线性模型,并采用因子分析和因子还原方法确定各指标的权重。
The reductive electronic number for high valence manganese was calculated according .
然后采用高锰酸钾标准溶液反滴草酸钠的方法测定其中高价锰含量,从而得到还原电子数,结合总锰含量得出其锰的平均价态。