| 单词 | celestial sphere |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔Northern Hemisphere〕Astronomy The half of the celestial sphere north of the celestial equator.【天文学】 北半球：天赤道以北的半个天球美国传统〔Southern Hemisphere〕Astronomy The half of the celestial sphere south of the celestial equator.【天文学】 南天球：天赤道以南的半个天球美国传统〔celestial globe〕A model of the celestial sphere showing the positions of the stars and other celestial bodies.天体仪：显示恒星和其它天体位置的天体结构模型美国传统〔celestial pole〕Either of two diametrically opposite points at which the extensions of the earth's axis intersect the celestial sphere.天极：两个呈对角线方向相对的点之一，穿过此点的地轴延线与天球相交美国传统〔conjunction〕Abbr. conj.Astronomy The position of two celestial bodies on the celestial sphere when they have the same celestial longitude.缩写 conj.【天文学】 合：两个天体在天球中处于同一天球经线的位置美国传统〔ecliptic〕The intersection plane of the earth's orbit with the celestial sphere, along which the sun appears to move as viewed from the earth.黄道：地球运行轨道与天球的交界面，在地球上看，太阳似乎沿着黄道运行美国传统〔equinox〕Either of two points on the celestial sphere at which the ecliptic intersects the celestial equator.二分点：在天球上天赤道与黄道相切的两点中的任一点美国传统〔hemisphere〕Either half of the celestial sphere as divided by the ecliptic, the celestial equator, or the horizon.半天球：被黄道，天赤道或地平圈分成两半的天球的一半美国传统〔hour circle〕A great circle passing through the poles of the celestial sphere and intersecting the celestial equator at right angles.子午线：通过天体球两极，与天体赤道成直角相切的大圈美国传统〔meridian〕Astronomy A great circle passing through the two poles of the celestial sphere and the zenith of a given observer.【天文学】 天体的经线：通过天体上两极和一假定观测物天顶的大圈美国传统〔nadir〕Astronomy A point on the celestial sphere directly below the observer, diametrically opposite the zenith.【天文学】 天底：天球上，在观测者垂直向下的一点，与天顶完全相对美国传统〔sphery〕Of or relating to the celestial spheres.天体的，与天体有关的美国传统〔vertical circle〕A great circle on the celestial sphere that passes through the zenith and the nadir and thus is perpendicular to the horizon.平经圈：与水平线垂直的宇宙天体范围内的大圈，它经过天顶和地点美国传统〔zenith〕The point on the celestial sphere that is directly above the observer.天顶：在观测者正上方的天体上的一点美国传统 |
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