释义 |
ex·o·sphere AHD[ĕkʹsō-sfîr'] D.J.[ˈeksəʊˌsfɪə]K.K.[ˈɛksoˌsfɪr]n.(名词)- The outermost region of a planet's atmosphere.外大气圈:行星大气层的最外部
- The outermost layer of Earth's atmosphere, lying above the thermosphere and extending thousands of kilometers into space, from which molecules having sufficient velocity can escape Earth's gravitation.外逸层:地球大气层的最外圈,位于热层之上,并向太空延展几千公里,在那里分子具有足够的速度可以逃出地球的吸引力
ex'ospherʹic AHD[-sfîrʹĭk, -sfĕrʹ-] (形容词) |