| 单词 | thulium |
| 释义 | thulium (once / 909178 pages) n WORD FAMILY thulium USAGE EXAMPLESDepartment of Energy has rated it and thulium as the elements in shortest supply in the nation. Washington Times(Mar 21, 2015) n a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime Syn|Hyper Tm, atomic number 69 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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