Traditional multivariable analysis method mainly includes Principal component analysis method, Factor analysis method that we usually talk of.
传统的多变量统计分析方法，主要是指主成分分析方法、因子分析方法等我们常说的多元统计分析方法。
The principal factor method is simple and practical and is especially appropriate for medium sized pulverized coal fired boilers in China and is useful for other types of boilers.
主导因素法简单易行，适于在国内的中型煤粉炉上推广应用，在其它类型的锅炉上也很有参考价值。
The principal factor method were applied to analyze the main chemical components of the flue-cured tobacco.
应用主因子法对烤烟主要化学成分进行分析。
应用推荐