| 单词 | uranium-238 |
| 释义 | > as lemmasuranium-238 uranium-238 n. the common naturally-occurring isotope of uranium, of mass number 238.Uranium-238 forms about 99.3 per cent of natural uranium. Unlike uranium-235, it is unable to sustain a nuclear chain reaction, making it unsuitable for use in nuclear power or nuclear weapons. However, the isotope plutonium-239, which is fissile, can be produced by bombarding uranium-238 with low-energy neutrons.extracted from uraniumn.< as lemmas |
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