英日字典: tm
The tm has 1 Senses.
- atomic number 69, thulium, tm
- ツリウム
- 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
- 柔らかで銀色の希土類金属元素
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