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- An early instrument for measuring altitude of celestial bodies, consisting of a90= graduated arc with a movable radius for measuring angles. 象限仪用来测量天体纬度的一种早期工具,由一个有90度刻度的圆弧和一个用来测量角度的可移动的半径构成
- an early instrument for measuring altitude of celestial bodies,consisting of a90= graduated arc with a movable radius for measuring angles 象限仪,用来测量天体纬度的一种早期工具,由一个有90度刻度的圆弧和一个用来测量角度的可移动的半径构成
- The geology of celestial bodies. 天体地质学有关天体研究的地质学
- A medieval instrument, now replaced by the sextant, that was once used to determine the altitude of the sun or other celestial bodies. 星盘一种中世纪的仪器,曾用来测量太阳或其它天体的高度,现在已被六分仪取代
- altitude of celestial bodies 天体高度
- An instrument that measures the altitude and azimuth of celestial bodies,used in navigation. 用来测量天体的高度和角度的装置,通常用于航海。
- A medieval instrument,now replaced by the sextant,that was once used to determine the altitude of the sun or other celestial bodies. 星盘一种中世纪的仪器,曾用来测量太阳或其它天体的高度,现在已被六分仪取代
- A medieval instrument,now replaced by the sextant,that was once used to determine the altitude of the sun.or other celestial bodies. 星盘一种中世纪的仪器,曾用来测量太阳或其它天体的高度,现在已被六分仪取代
- The scientific measurement of the positions and motions of celestial bodies. 天体测量学天体位置及运动的科学测量
- Disappear beyond the horizon,of celestial bodies such as the sun and the moon. 在地平线以下消失,指太阳和月亮等天体。
- The branch of astronomy that deals with the measurement of the position and motion of celestial bodies. 天文学中有关天体位置与运动的测量的分支。
- We are flying at an altitude of 20000 feet. 我们的飞行高度是20000英尺。
- The adoption of the relevant laws of celestial bodies colliding with Earth is reflected by the mathematical formula. 通过数学公式反映地外天体撞击地球的有关规律。
- The airliner flew at an altitude of 20000ft. 客机在两万英尺的高度飞行。
- Research on the Technique of Spectro-polarimetric Imaging of Celestial Bodies and Its Experiments in the Daytime[J]. 引用该论文 孙晓兵;洪津;骆冬根;杨伟锋;张冬英;乔延利.
- Astronomy studies the motions and natures of celestial bodies, such as planets, stars and galaxies. 天文学研究天体的运动和性质,例如,行星、恒星和星系。
- An optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome. 天象仪一种能将天体和其它天文学现象的影象投射到半球状圆屋顶内表面的光学设备
- The scientific study of matter in outer space, especially the positions, dimensions, distribution, motion, composition, energy, and evolution of celestial bodies and phenomena. 天文学外层空间事物的科学研究,尤指天体及天文现象的位置、大小、分布、运动、构成、能量及演化的科学
- Besides, this approach with the observed altitudes of two celestial bodies can also be applied to determine the astronomical vessel position when the time is given. 同时,本方法可应用在已知时间下,观测两个天体高度来决定天文观测船位。
- The plane was then flying at an altitude of 8000 feet. 当时飞机在八千英尺的高度飞行。