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uranium 238
释义
uranium 238
n.
(名词)
The most common isotope of uranium, having mass number 238 and half-life 4.51 × 10
9
years, nonfissionable but irradiated with neutrons to produce fissionable plutonium 239.
铀238:铀的最普通的同位素,质量数238,半衰期为4.51×10
9
年,不发生裂变但能用中子照亮以产生裂变钸239
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