地心

As on other glaciated Ecuadorian mountains, Chimborazo's glacial ice is mined by locals (the so called Hieleros from Spanish Hielo for Ice) to be sold in the markets of Guaranda and Riobamba.

这里说的最厚是指从地心到峰顶的距离，之所以最厚，是因为地球的赤道半径最大，比极半径大近12公里，而钦博拉索峰位于赤道，就地心到峰顶的距离的距离来说，比珠穆朗玛峰要大。

Then,the cosine value of central angle between the spacecraft and the descending node is solved by using cosine theorem of spherical geometry to avoid the cumbersome solving process by judging the flight direction of a satellite and the latitude of sub-satellite point in an original calculation model of image motion speeds.

通过球面几何的余弦定理直接求解航天器与降交点相对地心夹角的余弦值，避开了原像移速度计算模型中通过判断卫星飞行方向和星下点纬度来求解航天器与降交点相对地心夹角余弦值这一过程。

The accuracy of the measurements of the geocentric vector plays a key role in satellite navigation,but it is affected by the earth oblateness.

卫星利用紫外敏感器和星敏感器进行自主导航的方法中地心矢量的测量精度是影响导航精度的重要因素之一，而地心矢量的测量又受到地球扁率的影响。

According to its theoretical model of the true geocentric longitude, the astronomical meaning of planetary theory in ancient China is revealed.

根据构建的行星地心平黄经的理论模型，分析了传统历法中对行星的平视运动推算的精度；又利用行星之地心真黄经的理论模型，探讨了中国古代行星算法模型的天文意义。

In the process of location compute of object,local coordinate system of object is established,and according geocentric coordinate system is established in terms of earth's ellipsoidal model.

在目标位置解算过程中，建立目标局部坐标系，根据地球的椭球模型，建立相应的地心坐标系。根据求得的目标局部坐标系与地心坐标系的转换关系，解算空中或地面目标相对于地心坐标系的大地坐标参数。

Arithmetic Analysis of Geocentric Vector Based on Earth Sensor for Spheral Model and Oblate Model;2. The accuracy of the measurements of the geocentric vector plays a key role in satellite navigation,but it is affected by the earth oblateness.

卫星利用紫外敏感器和星敏感器进行自主导航的方法中地心矢量的测量精度是影响导航精度的重要因素之一，而地心矢量的测量又受到地球扁率的影响。

The records gathered revealed that these 90 initiates left their monastery in the inner earth and ventured up to a beautiful cave near the surface of the earth that was as large as a canyon with lakes, streams, waterfalls and stalactite ceilings that refracted the light of the aurora.

收集起来的记录揭示出，这90个提升者离开了他们地心的修道院，探访到一个靠近地表的优美洞穴中，这个洞穴巨大到就象一个包含湖泊、溪流、瀑布的峡谷，在钟乳石的洞顶上折射着地心极光的色彩。

By using constructing elements between GPS net work point and state control point determined by ordinary survey instruments and making use of converting formula of the WGS-84 coordinate system and occupation station original based grid system, the WGS-84 coordinates of the state control point were calculated.

针对GPS控制网与国家控制点联测时遮挡严重的问题，提出了一种虚拟基线的方法，即通过常规方法测出GPS网中某点与国家控制点之间的基线构造元素，并利用WGS84地心坐标系与站心地平直角坐标系之间的转换模型计算出国家控制点的WGS84地心坐标，然后根据GPS商业处理软件的基线格式构造出GPS网中某点与国家控制点之间的虚拟基线，并入整个GPS控制网中进行平差解算。

In order to resolve the problem of the coordinates transformation between the WGS 84 and local geodetic system, in this paper, four parameter method with plane constraint and the method based on polynomial approximation are discussed.

GPS定位技术在各个领域中已得到了广泛的应用，而GPS定位成果属于WGS-84地心大地坐标系，致使将GPS地心坐标转换成本地坐标的方法愈来愈得到广大工程技术人员的关注。

The scanning infrared sensor is used to measure the geocentric vector .

圆锥扫描式红外地球敏感器常用于测算地心矢量，而地球扁率影响地心矢量精度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。