英语词汇“coronium”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	coronium
释义	coronium coronium (kəˈrəʊnɪəm) n (Elements & Compounds) a hypothetical element whose existence was proposed in the 19th century to explain a green line seen in the solar coronal spectrum; this is now known to be highly-ionized iron and nickel Coronium Coronium a hypothetical chemical element to which the formation of emission lines in the spectrum of the sun’s corona was ascribed. In 1939–40 it was established that the observed coronal lines are actually caused by a number of electron transitions in highly ionized elements, namely, iron, nickel, calcium, and argon.
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coronium