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单词 aqua regia
释义

WordReference Random House Unabridged Dictionary of American English © 2024
aqua regi•a  (rējē ə),USA pronunciation [Chem.]
  1. Chemistrya yellow, fuming liquid composed of one part nitric acid and three to four parts hydrochloric acid: used chiefly to dissolve metals as gold, platinum, or the like. Also called nitrohydrochloric acid. 
  • Neo-Latin: literally, royal water
  • 1600–10

Collins Concise English Dictionary © HarperCollins Publishers::
aqua regia /ˈriːdʒɪə/ n
  1. a yellow fuming corrosive mixture of one part nitric acid and three to four parts hydrochloric acid, used in metallurgy for dissolving metals, including gold
    Also called: nitrohydrochloric acid
Etymology: 17th Century: from New Latin: royal water; referring to its use in dissolving gold, the royal metal
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