The results were analyzed with SAS system software.
用SAS软件进行统计分析。
SAS is a computer software system for data analysis developed by SAS Institute of U. S. a.
SAS是美国SAS研究所研制的用于数据分析的计算机软件系统。
SAS software system not only has powerful function of disposing and analyzing data but also good effect on forecasting.
SAS系统不但具有强大的数据处理和分析功能，而且用于预测的效果也较好。
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