打字猴:1.70004094e+09
1700040940
1700040941 National Space Biomedical Research Institute(NSBRI),71
1700040942
1700040943 National Space Council,231
1700040944
1700040945 Nautilus-Ⅹ,77-78
1700040946
1700040947 Naval Research Laboratory,107
1700040948
1700040949 Nazis,99,150
1700040950
1700040951 NEAR spacecraft,207
1700040952
1700040953 Neptune,305-306,327,329-331
1700040954
1700040955 NERVA program,342
1700040956
1700040957 New Horizons mission,305,307,331-333
1700040958
1700040959 NewSpace,13,115
1700040960
1700040961 New Swabia,30
1700040962
1700040963 Newton’s third law,131
1700040964
1700040965 Nextel fiber,126
1700040966
1700040967 nickel,203-204,211
1700040968
1700040969 nitrogen,258-261
1700040970
1700040971 nitrogen tetroxide,104
1700040972
1700040973 Nixon,Richard,5,9,223
1700040974
1700040975 noise(of rockets and spacecraft),136-138,146-147
1700040976
1700040977 nuclear fission,105-106,342
1700040978
1700040979 nuclear fusion,105-106,165-168,334,342-343
1700040980
1700040981 nuclear-powered spacecraft,103-104,342-343
1700040982
1700040983 nuclear war,21-22
1700040984
1700040985 Obama,Barack,158,223,247
1700040986
1700040987 Oberon,327-329
1700040988
1700040989 Occupational Safety and Health Administration(OSHA),63,82
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