| 单词 | technetium |
| 释义 | technetium (once / 656629 pages) n WORD FAMILY technetium USAGE EXAMPLESChalk River produces about 20% of the world’s supply of technetium; the rest comes from six other aging reactors in Europe, Australia and South Africa. Nature(Sep 11, 2016) The sulphides this introduces react with water to produce sulphate mineral phases that are exceptionally good at sorbing technetium-99. BBC(Feb 13, 2016) You might think it’s a long way to get up to Technetium, but stars live for hundreds of millions of years in this giant phase. Forbes(Aug 01, 2015) n a crystalline metallic element not found in nature; occurs as one of the fission products of uranium Syn|Hyper Tc, atomic number 43 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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