meteoroid

英[\'mi:tjərɔɪd]

美[\'mitɪərˌɔɪd]

基本释义

The cometary ejection play a crucial role in formation and evolution of the meteoroid stream.

彗星的喷发速度在流星群的演化过程中起着重要作用.

互联网

Noun

1. (astronomy) any of the small solid extraterrestrial bodies that hits the earth's atmosphere