Effective strategies of geographical collaborative studies can be preliminarily grasped and improved, and practical and theoretical results can be accomplished.

To expand data base of historical and geographical studies by using archaeological research and to explore the potential whether archaeological geography could become a branch of the discipline of historical geography;

以考古遗存为研究对象，拓宽历史地理研究的资料来源和利用领域，考察考古地理学成为历史地理学乃至地理学的有机组成部分的可能性和可操作性。

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Recent humanization development of physical geographical studies in the USA and Europe is reviewed mainly based on The Changing Nature of Physical Geography by Derek Gregory.

从自然地理学先驱们探讨人类活动及其影响着手，对自然地理学的人文化进行回顾，并论述其最新进展；

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Instead ， he discovered that the documentations made by his predecessors in their geographical studies were quite unreliable in many aspects.

相反，他发现了前人在文献中记述的地理研究有很多谬误偏差。

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Geographical studies in Australia since 1970s

七十年代以来澳大利亚的地理研究

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On the changing agricultural structure and its geographical studies

论农业结构变化及其地理学研究

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The present situation and future tasks of the geographical studies in the coastal open region

沿海开放地区地理研究的现状与今后的任务

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On the basis of geographic accuracy in survey of the terrain and need for application of map, the paper analyses and discusses synthetic choose of the terrain, and discusses the relation of integrative accuracy and part accuracy.

从地形图的地理精度及用图的需要对地形的综合取舍进行了分析与探讨，同时也讨论了地形图的整体精度与局部精度的关系问题。

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National Geographic released the survey on last Tuesday in launching a five-year campaign to improve geographic literacy among young people in the United states.

美国国家地理协会于上周二公布了调查结果，此协会启动了一个五年计划，旨在提高美国年轻人的地理知识水平。

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Analysis and Discussion on Geographic Accuracy in Survey of the Terrain

地形测图中地理精度的分析与探讨

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At first, survey of study region is introduced, including physical geographic survey and the social and economic conditions;

首先介绍研究区概况，包括自然地理概况和社会经济条件；然后详细介绍矢量数据和属性数据的采集，包括遥感影像的配准、矢量数据的采集、属性数据的采集。

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On this foundation, fix the reference frame on the stator current vector and rotate synchronously ( stator current orientation).

在此基础上，将坐标系建立在旋转的定子电流矢量上并同步旋转。

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Small planets close to their parental stars risk becoming tidally locked: that is, the lengths of their days come to match their orbital periods, and they thus have one permanently hot hemisphere and one that is permanently cold.

接近它们母恒星的小行星会有发生潮汐加热的风险：即，这些小行星上白天的长度会与它们的轨道周期相对应，因此，它们的一半会永远炎热，而另一半会永远寒冷。

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Just as Mercury is locked facing the sun, the planet is tidally locked to its star, so that one side basks in perpetual daylight, while the other side remains in darkness.

与水星总有一半固定地面对太阳相似，该行星总是始终保持一面朝向恒星，使得星球的一半永久处于阳光之中，而另一半则永久位于黑暗。

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Theory of contraction-map is applied to the nonlinear difference equations to show that the perturbed system admits almost periodic solutions near a hyperbolic periodic orbit of the unperturbed system if the perturbation is sufficiently small.

将不动点定理运用于非线性的差分方程，得到在扰动充分小时，未扰动系统所存在的双曲周期轨道在干扰下产生概周期解。

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For the expansive flows with tracing property, this paper is to show that the topological dynamical property near by the periodic orbit is the same as that of the hyperbolic periodic orbit.

证明了具有跟踪性的可扩流在其周期轨附近的拓扑动力性质与双曲周期轨相同。

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In terms of the astronomical calendar, October in China is beautiful autumn;

从天文纪年的角度来说，10月在中国是美丽的秋天；

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The distribution of the land desertification in China and its harmfulness

我国土地沙漠化的分布与危害

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The land desertification assessment is an important theory in the research of desertification.

土地荒漠化评价是荒漠化研究中的重要问题。

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Study on ecological benefit of control of sandy land desertification in Heilongjiang

黑龙江省沙质荒漠化土地治理的生态效益研究

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Study on Land Desertification Situation and Control Strategy in High Frigid Regions of China

高寒地区荒漠化现状与防治途径探讨

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