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月球中继
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月球中继
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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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linguistic string analysis
linguistic turn
Linguistic Typology
linguistic value
linguistic variable
linguistic variant
Linguistic Variation and Change
Linguistic Variations in Chinese Speech Communities
Lingunite
Ling Wenquan
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Lingwu kiln ceramics in Ningxia
Lingwu Shi
Lingwu-Yanchi taidi
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Lingxiao Pagoda
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lingxu
Lingyanggong patterns
Lingyanggong symmetrical patterns
Lingyan Jianfeng tea
Lingyan Mountains by Yun Shouping
Lingyan Pavilion
Lingyansi Moding Temple Pinetree
Lingyan Temple
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