Finally the existing problem and development trend of uncertainty analysis method in environment model were presented.
阐述了目前环境模型不确定性分析方法应用存在的问题和发展趋势。
By using the external environment PEST analysis model and the trend - driven method, requirements for basic level statistics were analyzed.
利用PEST外部环境分析模型，采用趋势驱动法，分析我国基层统计工作新的要求。
The grey trend relational analysis given by this pa-per offers a new method for analysing social and economic system.
给出了灰色趋势关联分析的一般步骤，为社会经济系统的灰联联分析提供了新的方法和途径。
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