Then regression of mathematical models is used to study the distribution of population and the evolution of spatial structure of Beijing Metropolitan Area.
继而，通过数学模型的回归研究北京都市区人口分布及空间结构的演化趋势。
Beijing is a metropolitan area that a great variety of people who have diversified interest in activities. There are demands for different people going to various clubs.
北京是一个有着形形色色人的大都市，他们有着多元化兴趣爱好，因此他们会参加各种不同的俱乐部。
The vision of HPLC is to become the leading supplier of newsprint in the metropolitan Beijing area and our customers' supplier of choice.
河北诺斯克。龙腾纸业的目标是成为北京地区最主要的新闻纸供应商、成为我们客户的选择。
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