环形世界 Ringworld
（重定向自Niven ring）
《圆环世界》（Ringworld，又译《环形世界》）是美国小说家拉瑞·尼文（Larry Niven）创作于1970年的雨果奖和星云奖获奖科幻小说，故事发生在他所设定的已知空间宇宙中。这部作品被广泛认同为一部科幻小说的杰作。该作品有三部续集，并且和设定在已知空间的其他故事有千丝万缕别的关系。
Niven ring
中文百科
英语百科
Ringworld 环形世界
（重定向自Niven ring）
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Ringworld is a 1970 science fiction novel by Larry Niven, set in his Known Space universe and considered a classic of science fiction literature. Niven later added four sequels and four prequels. (The Fleet of Worlds series, co-written with Edward M. Lerner provides the four prequels as well as Fate of Worlds, the final sequel.) These books tie into numerous other books set in Known Space. Ringworld won the Nebula Award in 1970, as well as both the Hugo Award and Locus Award in 1971.
- hypertwistors
- hypertypic
- hypertypic regeneration
- hypertyrosinaemia
- hypertyrosinemia
- Hypertyrosinemias,Type I
- Hypertyrosinemia,Type I
- hyperuniformity
- hyper urbanism
- hyperurbanism
- hyperuresis
- hyperuricacidemia
- hyperuricaciduria
- hyperuricaemia
- hyperuricaemic
- hyperuricaemic nephropathy
- hyperuricemia ataxia and hearing loss
- hyperuricemia
- hyperuricemic
- hyperuricemic nephropathy
- Hyperuricosuria
- hyperuricosuric
- hyperuricuria
- HyperV
- hypervaccination