nitrogen-13
(informal, dated) San Francisco (a city in California)
(physics) A radioactive isotope of nitrogen, ¹³₇N, having seven protons and six neutrons, and a half-life of less than ten minutes; it is used in positron emission tomography
Non-Oxford British English standard spelling of salinize.
Of or relating to Smyrna.
研究者たちは実験室でその崩壊特性と短い半減期を研究するために、質量数13の放射性窒素同位体を生成した。
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