Expatiated on the application theory of basic orbit, including subastral point calculation, visibility analysis, coverage evaluating and spacecraft life-span estimate.
阐述了基本轨道应用分析理论，包括星下点轨迹计算、可见性分析、覆盖评估和轨道寿命估算。
Objectives to make contrast analysis with ultrasonic imaging on eye or orbit tumor and clinical operation as well as pathology, in order to discuss diagnosis value of ultrasonic on eye or orbit rumor.
目的对眼内及眶内肿瘤超声检查与临床手术及病理进行对照分析以探讨超声对眼内及眶内肿瘤的诊断价值。
Based on the target's phasing time analysis of orbit determination error, orbit control error and orbit prediction error, the strategy of the target's phasing orbit maneuver was developed.
基于定轨误差、轨道控制误差和轨道预报误差的调相时间分析，制定了目标飞行器调相控制策略。
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