鑭系元素 [ㄌㄢˊ ㄒㄧˋ ㄩㄢˊ ㄙㄨˋ; lan2 xi4 yuan2 su4]
 lanthanoid (rare earth series), namely: lanthanum La57 鑭[ㄌㄢˊ; lan2], cerium Ce58 鈰[ㄕˋ; shi4], praseodymium Pr59 鐠[ㄆㄨˇ; pu3], neodymium Nd60 釹[nu:3], promethium Pm61 鉕[ㄆㄛˇ; po3], samarium Sm62 釤[ㄕㄢ; shan1], europium Eu63 銪[ㄧㄡˇ; you3], gadolinium Gd64 釓[ㄍㄚˊ; ga2], terbium Tb65 鋱[ㄊㄜˋ; te4], dysprosium Dy66 鏑[ㄉㄧ; di1], holmium Ho67 鈥[ㄏㄨㄛˇ; huo3], erbium Er68 鉺[ㄦˇ; er3], thulium Tm69 銩[ㄉㄧㄡ; diu1], ytterbium Yb70 鐿[ㄧˋ; yi4], lutetium Lu71 鎦[ㄌㄧㄡˊ; liu2]

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