By using the method of cluster analysis, the annual variation curve types of the sunshine percentage in China are divided into 12 divisions.
本文根据日照百分率年变程曲线类型，应用聚类分析方法，把全国划分为12个日照区。
Thus a method is proposed for comprehensive prevention with a deeply buried stage variation cluster piles.
为此提出了采用深埋式变阶群桩进行综合防治的方法。
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