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atomic number 65

n. a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite

同义词： terbium Tb

n.a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite

同义词：terbiumTb

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