地球

Finally, the influence of permanent tide is recalculated using the same precise development of TGP. This work can be taken as a theoretical reference for the research of highprecision space geodesy and astrogeodynamics. tide-generating potential ; station displacements ; spectrum method ; Love/Shida number

最初的Love数和Shida数是由静态球形地球的潮汐模拟理论推求的，由于地球是旋转椭球形的天体，地球形变对引潮力位的响应存在着不同调和函数的微小混合，这样Love数和Shida数就与测站纬度和TGP的调和级次有关，纬度特性可通过引入一组常数来表示，最初的结果由Wahr

For souvenir " earthly day ", establish consciousness of hardship of resource of the whole people, protect the earth, this print editorial office is special branch of youth of society of economy of as geological as division of science and technology of academy of economy of Chinese land natural resources, China mineral products was engineered jointly this period commemorative column, li Xinyu of academy of economy of natural resources of land of specially invite China's deputy researcher, Wang Wen's deputy researcher, Hu Xiaoping's deputy researcher " be kind to resource of the earth, protection " write civil, with period the protective consciousness that raises numerous people, be kind to the earth, protect resource, to build comparatively well-off society in the round the implementation of grand target provides enough resource safeguard.

为纪念&地球日&，树立全民资源忧患意识，保护地球，本刊编辑部特与中国国土资源经济研究院科技处、中国地质矿产经济学会青年分会共同策划了本期纪念专栏，特邀中国国土资源经济研究院李新玉副研究员、王文副研究员、胡小平副研究员就&善待地球、保护资源&撰文，以期提高广大民众的保护意识，善待地球，保护资源，为全面建设小康社会宏伟目标的实现提供充足的资源保障。

First,the paper summarized and analyzed the definition of the earth prime meridian in different periods,clarified the ambiguous recognition that the earth prime meridian was the meridian passing Greenwich astronomical observatory and gave the rigorous definition about the Earth prime meridian presently.

首先对地球首子午线在不同时期的定义进行了分析和总结，进一步明确了当前对地球首子午线的严格定义，澄清了地球首子午线即过格林尼治天文台的子午线这一模糊认识。

The ESEU website includes information about ESEU activities. Worksheets for teaching earth sciences at key stages 3 and 4, used in INSET training, are available from the site. The documents (in PDF format, requiring Adobe Reader) cover topics such as the rock cycle, rock identification, the changing Earth and atmosphere, plate tectonics and outdoor activities. Resources available on the site include: a virtual rock kit with images of sedimentary, igneous and metamorphic rocks; links to related sites; and recommended textbooks.

网站内容包括机构信息及活动信息介绍、地球科学教学第三和第四阶段工作表内容介绍、网上地球科学培训资料、免费文件全文内容（主题涉及到岩石圈、岩石鉴别、地球表面及大气层变化、板块构造论以及各种室外活动等内容，为pdf格式）以及相关的资源（包括各种沉积岩、火成岩及变质岩照片、相关网站链接以及一些推荐教科书）等内容。

The researches on land use and driving forces is the frontier of geo-science, and it mainly studies the effect and action of natural driving forces and human driving forces on the change of earth system, and it is important content of the research area of contemporary international earth science and earth surface system.

土地利用变化与驱动力研究是地学研究的前沿问题，主要研究自然驱动力与人力驱动力对地球系统变化的影响和作用，是当代国际地球科学，尤其是地球表层系统研究领域的重要内容。

Land cover changed a lot through the Weijing and Tang Dynasties, especially in Ming and Qing Dynasties, resulting in a series of changes such as shrinkage of lakes, river re-channeling, oasis movement, and loss of vegetation due to dessication.

土地覆盖包括覆盖地球表面的天然或人工植被以及人工建筑，是地球表面的生物物理状态，是覆盖地面的自然物体和人工建筑物的综合体，反映的是地球表层的自然状况。

Institute of Geology and Geophysics, Chinese Academy of Science's main research field includes geodynamics,geomagnetism,mineralization and resources exploration,engineering geology and subsurface geophysics.

中国科学院地质与地球物理研究所的主要研究领域包括：地球动力学、地磁学、成矿与资源探察、工程地质学与浅层地球物理等领域。

Global warming, destroying of ozonosphere, desertization, acid rain and other environmental problems are not any problems of one country because these problems have threatened fundament for survival of all lives on the earth.

在我们身边发生的地球温暖化及臭氧层破坏、沙漠化、酸雨等地球环境问题不再是某一个国家的问题，如今已经成为威胁到地球上所有生物赖以生存的根本的问题。

Other theorists propose that the Moon was ripped out of the Earth's rock y mantle by the Earth's collision with another large celestial body after m uch of the Earth's iron fell to its core.

其他的理论家提出，在地球的大部分铁沉入到地核之后，由于地球与另一个庞大的天体发生碰撞，月亮便从地球那石质的地幔中撕裂开来而形成的。

Just"new Earth" of the detection of mother fixed star Gliese 581 distance the Earth only have 20.5 light year, is leave the Earth recent of 100 one of the fixed stars.

只是&地球母亲的检测&葛利斯581恒星的距离地球只有20.5光年，是离开地球100恒星固定行星。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。