The main objectives of the project are to improve water supply in Changchun to meet the domestic needs of the urban population, support industrial growth, and control urban water pollution.

本项目的主要目标是改善长春市供水条件，满足城市人口生活用水需求，支持工业增长，控制城市水污染。

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China limits most urban couples to one child and rural families to two in an attempt to control population growth and to conserve natural resources.

中国对大多数城市夫妇生一个孩子、农村家庭生两个孩子的限制，是为了控制人口增长，节约自然资源。

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Urban growth simulation has a very important significance for rational adjustment and control of urban System, and Residental spatial growth is a main part of urban spatial growth.

模拟城市要素空间增长对城市系统的合理调控有着十分重要的意义，而居住的空间增长是城市空间增长的主要部分。

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