释义 |
uranium 238n.(名词)- The most common isotope of uranium, having mass number 238 and half-life 4.51 × 109 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4.51×109年,不发生裂变但能用中子照亮以产生裂变钸239
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