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- Cordelia and Ophelia orbit inside the synchronous orbit radius. 天卫六与天卫七属于同步轨道半径之内。
- Metis and Adrastea orbit inside the synchronous orbit radius and inside the Roche limit. 木卫十六与木卫十五的公转轨道处在同步公转轨道半径之内，并在Roche极限之内。
- Owing to the extremely small orbit radius, the laser-field synchrotron radiation thus generated is an attosecond or zeptosecond X-ray pulse. 研究发现此过程可以获得阿秒和泽秒X射线脉冲；
- We can compute the circular area with radius. 我们能用半径计算出圆的面积。
- The spacecraft is in orbit around the moon. 该航天器在绕月球轨道运行。
- The space shuttle will orbit a weather satellite. 太空梭将把一个气象卫星送入运行轨道。
- The launch vehicle lifts the satellite into orbit. 太空火箭将人造卫星送入运行轨道。
- Moving or directed along a radius. 沿着或向着半径移动的
- Something of circular form; a circle or an orbit. 圆形物体圆形物体; 圆圈或环形轨道
- The orbital radii of the moons are strangely separated by less than the radii of the moons themselves: about 50 kilometers. 令人奇怪的是，卫星轨道分开的距离比卫星的半径还要小：约50千米。
- The spacecraft is in orbit (ie moving in orbit) round the moon. 该航天器在绕月球轨道上飞行。
- The police searched all the woods within a six-mile radius. 警察搜索了在周围六英里以内的树林各处。
- Marketing does not come within the orbit of his department. 市场推销业务不归他这一部门管。
- There are three lakes within a radius of five miles. 周围五英里之内有三个湖泊。
- The given radius being 4 ft., find the circumference. 已知半径为四英尺,求周长。
- Every family within a radius of25 miles of the city center. 住在离城中心半径25英里的范围内的家庭
- The satellite was launched into orbit around the moon. 卫星被发射进入绕月球运行的轨道。
- The two spacecraft will link up (with each other) in orbit. 两艘宇宙飞船将於轨道上(互相)连接。
- By now, putting satellites in orbit is old hat to space scientists. 现在，对航天科学家来说，把卫星送入轨道已不是一桩新鲜事了。
- Orbital Radius of the Test Particles in the Equatorial Plane of the CM Field 试验粒子在CM场赤道平面的轨道半径
