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〔月球空间探测〕
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Ranger
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美国在20世纪60年代发射的系列探测器,于1961至1965年间陆续发射,共9架,目的是测试论证深空探测的必要技术,同时拍摄月球的近距离高清晰度影像,并最终完成月面硬着陆。
Astronomy
Ranger
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随便看
rational Bezier curve and surface
rational Bezier surface
rational boundary component
rational canonical form
rational central simple algebra
rational chain
Rational Choice Institutionalism
rational choice theory
rational choice theory of sociology
rational circle
rational coefficient
rational cohomology group
rational comprehensive decision-making
rational configuration
rational conformal field theory
rational content
rational convexity
rational crimes
rational cuboid
rational curve
rational curve and surface
rational cut
rational cutting problem
rational cycle
rational density
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