... near surface flow表面流近面流 nearly circular orbit近圆轨道 necessary condition必要条件 ...
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... nearly circular orbit 近圆轨道 near-circular orbit 近圆轨道 circular orbit: 圆轨道 ...
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Photogrammetric satel1ite usually adopts the close earth and nearly round orbit.
摄影测量卫星通常采用近地、近圆轨道。
参考来源 - 摄影测量卫星基础规划技术分析与仿真·2,447,543篇论文数据，部分数据来源于NoteExpress
应用卫星绝大部分都是近圆轨道的卫星 ，其中又有很多是需要进行轨道控制的。
Most of application satellites are running in near circular orbits, and many of them need to be controlled.
首先基于二体假设，采用两种方法系统地研究了圆或近圆轨道上卫星编队飞行的相对运动。
Based on the two-body assumption, two methods are used to investigate the relative motion of satellite formation flying on circular or near-circular orbits.
导航卫星一般采用近圆轨道，当卫星轨道偏心率或者轨道倾角接近于零时，利用GPS卫星开普勒轨道根数拟合卫星广播星历会出现一些问题。
When their orbit eccentricity or inclination are near zero, some problems may occur when the GPS Kepler orbit elements fitting method is applied to fit their broadcast ephemeris parameters.
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