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launch window 發射時限〔指條件適合發射太空船的一段時期〕。

launcher

So combine the item of “ space targets surveillance photoelectricity telescopes arrays system ” , this thesis does research in developing space targets visualization system . the main achievement in this thesis can be summarized as follows : 1 . expatiate e the basic theory of satellite track dynamic , analyse the orbit characteristic of two - body problem and launch window , subastral point calculation , visibility and coverage analysis , two - line element sets 本文結合“空間目標監視光電望遠鏡陣系統”課題,進行了空間目標可視化系統的設計和研究,主要作了以下幾方面的工作: 1 、闡述了衛星軌道動力學的基本原理,分析了二體軌道特性和發射窗口的基本特性,星下點軌跡計算、可見性和覆蓋分析和兩行根數。

It enables the end - user to conveniently launch windows and “ traditional “ applications directly from within the portal and the workplace managed client 這就使終端用戶能夠直接從門戶和workplace managed client內部方便地啟動windows和舊的應用程序。

The mission was cancelled until the next launch window which will be exactly three weeks from today 太空任務取消了,要等到下次行星運轉的位置對發射有利的時機再進行,那時正好是3個星期之后。

Search for optimal launch window for small celestial body exploration mission using genetic algorithm 利用遺傳算法搜索小天體探測最優發射機會

My next launch window for a european trip isn ' t until school is over in june 直到六月學校放假才是我下次到歐旅行的有利時機。

My next launch window for an asian trip isn ' t until school is over in july 我下次去亞洲旅行的合適時機是在7月學校放假之后。