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天火字典

英日字典: Au



The au has 2 Senses.

  • atomic number 79, gold, au
  • Au, , Au, AU
  • 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
  • 軟質の黄色い可鍛性の延性がある(三価染色体と一価染色体)金属元素

  • astronomical unit, au
  • 天文単位
  • 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)
  • 太陽系内の距離のために使われる長さの単位

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