英语词汇“ring arc”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

ring arc n. Astronomy a structure that appears as an arc or incomplete ring around a planet, esp. Neptune, generally representing part of a complete ring in which the rest of the ring is faint or invisible.

ΚΠ

1985 Science 6 Dec. 1150/2 (heading) Neptune's ring arcs confirmed.

1992 New Scientist 13 June 17/2 When Voyager 2 flew by Neptune in 1989, its cameras revealed five partial rings—or ring arcs—spaced around one circle 60,000 kilometres from the centre of the planet.

2007 E. D. Miner et al. Planetary Ring Syst. v. 70 There have been changes in Neptune's ring system since the Voyager 2 encounter. The Adams and Le Verrier rings are still at their expected locations but the ring-arc Liberté has almost completely vanished.

单词	ring arc
释义	> as lemmas ring arc ring arc n. Astronomy a structure that appears as an arc or incomplete ring around a planet, esp. Neptune, generally representing part of a complete ring in which the rest of the ring is faint or invisible. ΚΠ 1985 Science 6 Dec. 1150/2 (heading) Neptune's ring arcs confirmed. 1992 New Scientist 13 June 17/2 When Voyager 2 flew by Neptune in 1989, its cameras revealed five partial rings—or ring arcs—spaced around one circle 60,000 kilometres from the centre of the planet. 2007 E. D. Miner et al. Planetary Ring Syst. v. 70 There have been changes in Neptune's ring system since the Voyager 2 encounter. The Adams and Le Verrier rings are still at their expected locations but the ring-arc Liberté has almost completely vanished. extracted from ringn.¹ < as lemmas
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> as lemmas