英语词汇“protium”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	protium
释义	Word Frequency protium (ˈprəʊtɪəm) noun the most common isotope of hydrogen, having a mass number of 1 Word origin C20: New Latin, from proto- + -ium
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