celestial sphere
英 [səˈlestiəl sfɪə(r)]
美 [səˈlestʃl sfɪr]
天球
英英释义
noun
- the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
双语例句
- ( astronomy) moving from west to east on the celestial sphere; or for planets around the sun in the same direction as the Earth.
(天文学)在天球上从西向东运动;或者指行星按地球运动的方向绕着太阳转。 - One of two points of intersection of the Earth's axis and the celestial sphere.
地轴延线与天球相交的两点之一。 - The great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth.
天球上的一个大圆,有一个通过地球的中心并与观察者的视野平行的平面。 - Analyzing the Difficulties in the Celestial Sphere's Coordinate System
天球坐标系的难点解析 - D; ( 3) establishing theoretical relations between polar motion of rotational axis, polar motion and precession-nutation of either celestial sphere reference axis;
建立了自转轴极移和任一天球参考轴极移和章动之间的理论关系; - C++ software is used to classify tri-stars of the guide stars in celestial sphere and implement the method. It is concluded that the SOFM network can reflect the complicated information among star patterns better.
应用C++软件编程,对全天导航星星表的星信息进行了星三角采样、分类,指出SOFM网络可以很好地提取、反映星表中的复杂信息。 - With 486 partitions, an equal partition method of celestial sphere without overlap is firstly presented to speed up guide star indexing.
首先提出在直角坐标系下将天球球面均匀地分成486个分区的方法&内接正方体法,实现导航星的快速检索。 - Model of the celestial sphere; used by early astronomers to determine the positions of stars.
天球的模型;早期天文学家用的测定星体位置的仪器。 - Or approximately, it may be defined as the intersection of the diurnal mean direction of rotation axis with the celestial sphere.
近似地,可以认为天极是自转轴的周日平均方向与天球的交点。 - The simulation results indicate that Rosette and Common-track constellations, whose satellites are distributed in the celestial sphere uniformly, are appropriate for MEO-TDRSS of China.
仿真结果表明,我国的中轨TDRSS宜采用具备卫星全球均匀分布特性的玫瑰星座和共地面轨迹星座。