您要查找的是不是：
- celestial thermal background radiation 天空热背景辐射
- celestial thermal background 天空热背景辐射
- The apparent celestial origin of a meteoric shower. 流星群的辐射点明显的流星雨太空光源
- He has a strong political background. 他有强大的政治背景。
- The sun, moon, stars, etc. are celestial bodies. 太阳、月亮、星星等都是天体。
- That incessant background music gets on my nerves. 那没完没了的背景音乐令我非常烦恼！
- He has a working-class background. 他是工人阶级出身。
- Get the fall in the background, will you? 把瀑布拍进背景中去好吗？
- A background accompaniment, as for a performer. 伴奏为一个演奏者配音伴奏
- A term sometimes applied to a stylus in a thermal matrix printer. 有时用来指热敏点阵打印机的触针的一个术语。
- They had no hope of admission to the celestial kingdom. 他们无望进入天国。
- She came from a privileged background. 她出身於特权阶层。
- The sun, the stars and the moon are celestial bodies. 太阳，星星和月亮都是天体。
- He came from an impoverished background. 他出身贫寒。
- The angular distance of a celestial object above the horizon. 地平纬度地平线以上天体的角度距离
- This book gives the background of the Civil War. 这本书叙述了南北战争的背景。
- Other motives may have lurked in the background. 这后面可能隐藏着其它动机。
- He was lurking slyly in the background. 他狡猾地躲在背後活动。
- Even the celestial world is heavily guarded. 神仙世界也是戒备森严的。
- Thermal background suppression in Rayleigh-type nondegenerate four-wave mixing based on field-correlation effects 利用场关联效应抑制瑞利型非简并四波混频的热背底
