单词 | uranium-238 |
释义 | uranium-2381noun The common naturally-occurring isotope of uranium, of mass number 238.
Origin1920s; earliest use found in London, Edinburgh and Dublin Philosophical Magazine. uranium-2352noun An isotope of uranium, mass number 235, which is able to sustain a nuclear chain reaction, making it suitable for use in nuclear power and nuclear weapons.
Origin1930s; earliest use found in Science News. |
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