单词 | uranium |
释义 | uranium (once / 1596 pages) n WORD FAMILY uranium: uraniums USAGE EXAMPLESIt also includes 1 million acres rich in uranium ore where new mining claims are banned through 2032. Washington Times(Dec 30, 2016) Westinghouse said Thursday it aims to load enriched uranium fuel in the reactor early next year, pushing back its previous year-end goal. Wall Street Journal(Dec 29, 2016) The 2015 nuclear deal saw sanctions lifted in exchange for Iran limiting its uranium enrichment. Seattle Times(Dec 27, 2016) n a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons Syn|Hypo|Hyper U, atomic number 92 uranium 235 a uranium isotope with mass number 235; capable of sustaining chain reactions uranium 238the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239 metal, metallic element any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
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