English | Chinese |
---|---|
helion (nucleus of a helium-3 atom) noun | 氦核 /hàihé/noun |
aphelion [aphelia] (the point in the elliptical orbit of a planet where it is farthest from the Sun) noun [UK: æ.ˈfiː.liən] [US: æ.ˈfiː.liən] | 远日点 /yuǎnrìdiǎn/noun 遠日點noun |
perihelion [perihelia] (point in the elliptical orbit of a comet, planet, etc., where it is nearest to the Sun) noun [UK: ˌpe.rɪ.ˈhiː.lɪən] [US: ˌpe.rɪ.ˈhiː.lɪən] | 近日点 /jìnrìdiǎn/noun 近日點noun |