制约性

On a base of many fact data from Hong jiang city, this article use some scientific analysis way, provides scientific basis for analyzing the mutual relation between town and country' s structure and distribution and intension of land use; for town and country' s rational land distribution; for improving land productivity and land economic value of output; for land protection and a rational land use. The author wish to open up a path for the development of town and country.

本文以洪江市为研究区域，在大量的事实数据的基础上，运用了灰色系统法、回归分析法、经济相关法、综合分析法等科学分析手段，对该区域的城乡用地结构及布局与土地集约利用的相互关系，分析和处理好其相互制约性和促进性，为现在的城乡发展中的用地结构比例，城乡用地的合理布局、分区，土地生产率和经济产值的提高，耕地保护以及土地利用规划中土地的合理利用提供科学的依据和方法，并希望能为我国城乡发展规律开拓出一条正确、合理的道路。

And the modal auxiliary and imperative mood show the language art of presidents' addresses as they are meant to inspire the people.

而在体现总统对民众的号召力方面，情态助动词和Let 结构的使用体现了总统权利的绝对性和制约性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。