更新时间：2024-12-30 09:27:41
abbr.天文单位（=Astronomical Unit）；[物]埃（=angstrom unit）
Noun:- a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia
- 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)
au是什么意思 au在线翻译 au什么意思 au的意思 au的翻译 au的解释 au的发音 au的同义词
