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
  Synonym:sphereempyreanfirmamentheavensvault of heavenwelkin

双语例句

• 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。
• 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。
• A great circle on the celestial sphere passing through the zenith and perpendicular to the horizon.
  与水平线垂直的宇宙天体范围内的大圈，它经过天顶和地点。
• A point in the heavens ( on the celestial sphere).
  天上的一个点（在天球上）。
• ( 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。
• These records can be quantified to apparent scales ( angular diameter) according to the Model of Celestial Sphere used by Chinese ancients. Then we can reduce the size to a brightness on the basis of some "standard points".
  这些记录可以按古人目视观测天象的天球模型进行视大小（角直径）的量化，进而可以用一些已知亮度的流星记录为标准点，将其归算为亮度。
• 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。
• A great circle on the celestial sphere that passes through both celestial poles.
  通过天体球两极与天体赤道成直角相切的大圈。
• Its intersection with the celestial sphere will be a great circle& the ecliptic.
  它与天球相交处形成一个大圆&黄道。
• 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。