详细解释:【计】 加法器, 运算器, 声频
【医】 金(79号元素)
英语解释：
名词 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同义词：gold, atomic number 79