Terbium
[tә:biәm]
解释:
(noun.) a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite.
校对:玛拉--From WordNet
解释:
(n.) A rare metallic element, of uncertain identification, supposed to exist in certain minerals, as gadolinite and samarskite, with other rare ytterbium earth. Symbol Tr or Tb. Atomic weight 150.
整理:莱缪尔
解释:
n. a rare metal found in certain yttrium minerals.—adj. Ter′bic.
哈洛录入