astronomical unit是什么意思 astronomical unit怎么读
astronomical unit的英文翻译是什么意思，词典释义与在线翻译
Noun:- a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers)
astronomical unit的相关资料
AUabbr.天文单位（=Astronomical Unit）；[物]埃（=angstrom unit）
astronomical unit的用法和样例
用作名词 (n.)
- One astronomical unit equals the distance from the earth to the sun.
一天文单位等于从地球到太阳的距离。
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