nitrogen-14
plural of pinsetter
present participle of foreadvise
(physics) A stable isotope of nitrogen, ¹⁴₇N, having seven protons and seven neutrons; it accounts for over 99% of the natural element.
Their language.
研究者たちは、質量数14の安定した窒素同位体の測定を用いて古代の大気組成を研究した。
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