earth-orbit rendezvous 中文意思是什麼
earth-orbit rendezvous
解釋
繞地軌道會合- earth : n 1 〈常E 〉 地球。2 大地，陸地，地面，地上。3 土壤，土。4 【化學】土類；泥。5 世界人類；人的軀體...
- orbit : n 1 【天文學】軌道；【解剖學】眼窩，眶；（鳥或昆蟲的）復眼緣的頰部。2 （人生的）旅程，生活過程；...
- rendezvous : n. 〈sing. , pl. 〉1. 【罕】指定集合地；集合基地；集合，結集。2. 約會，聚會，約會地點[時間]；幽會處。3. 太空船的會合（點）。vi. （尤指在約定地點）會合，會見，集合，聚會。
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This at least accounts for the fact that a particular group of meteoroids shares with its parent comet more or less the same orbit, which can remain relatively unchanged over eons. an immediate consequence is that our earth makes periodic rendezvous with this meteoroid swarm, thereby culminating in a regular display of these celestial fireworks. to name a few, we have the lyrids in april and the geminids in december
流星雨的成因是地球遇上了一群密集的流星體，一般相信，流星群是由周期性彗星分解出來的物質或由瓦解了的彗核所形成，所以流星群和其母體彗星有大致相同的軌道，由於流星群的軌道頗為固定，所以地球會周期性地穿越這些流星群，形成固定出現的流星雨，例如四月天琴座流星雨十二月雙子座流星雨等。 -
Two spacecraft ’ s rendezvous technology in coplanar near - earth orbit with maneuvering target, based on the sight coordinate system is presented in this paper. differential games guidance law ( dggl ) and proportional navigation ( pn ) are studied
本論文研究了近地共面軌道兩空間飛行器在目標機動下的在軌交會技術，分別對微分對策制導律和比例導引制導律兩種制導方法進行了研究。
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