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lunar relay
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lunar relay
Encyclopedia
工学
月球探测
释
lunar relay
月球中继
通过单颗中继卫星或中继星座,为处于地面测控通信系统无法直接覆盖到的环月轨道飞行器、月球背面或两极地区的月面着陆器、进行月面活动的航天员或月球车等提供导航定位、通信中继、测轨定轨等服务的技术手段。
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asphalt tail gas
asphalt used in roofing
asphatic sand reservoir
aspheric
aspherical
Aspherical Lens
aspherical lens
aspherical manifold
aspherical mirror
aspherical plate corrector
aspherical space
aspherical surface
asphericity
aspheric mirror
aspherics
aspheric surface
asphodelus family
asphyxia
asphyxiating gas poisoning
Aspidiske
aspidistra
aspirated sound
aspirated voiceless initials
aspirated volume
aspiration
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