英语词汇“neptunium”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	neptunium
释义	nep·tu·ni·um \nepˈt(y)ünēəm sometimes -pˈchü-\ noun (-s) Etymology: New Latin, from International Scientific Vocabulary Neptune, the planet Neptune (from Latin Neptunus, the god Neptune) + New Latin -ium : a radioactive metallic element of the actinide series that is similar chemically to uranium, that was discovered as a short-lived isotope by spontaneous emission of an electron from uranium 239 produced in turn by neutron bombardment of uranium 238, and that is obtained as the longest-lived isotope in nuclear reactors as a by-product in the production of plutonium — symbol Np; see element table
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