| 单词 | thorium |
| 释义 | thorium (once / 24831 pages) n WORD FAMILY thorium USAGE EXAMPLESThe mining unearthed a toxic and radioactive mix of chemical elements, including arsenic, molybdenum, selenium, uranium, radium and thorium. Washington Times(Aug 07, 2016) But thorium gloms on to particles more readily than protactinium. Science Magazine(Jun 30, 2016) Thorium and vanadium are named after the Norse god of war Thor and goddess of beauty Vanadis, respectively. Slate(Jun 17, 2016) n a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands Syn|Hypo|Hyper Th, atomic number 90 radiothorium, thorium-228 radioactive isotope of thorium with mass number 228 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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