● 铥(銩)diū ㄉㄧㄡˉ
◎ 一种金属元素,属稀土金属。银色,质软,可用于制不需电源的手提简易X射线机。
thulium
◎ 铥 銩 diū 〈名词〉三价的金属元素,原子序数69,属于稀土族——元素符号Tm
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