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thulium是什么意思

thulium是什么意思

美['θuːliəm]  英['θuːliəm]
n.  铥(稀土金属元素;符号Tm;原子序69)
  简写符号:Tm
  近义词:TM,

英英释义

Noun
  1. 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