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atomic number 70

n. a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime

同义词： ytterbium Yb

n.a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime

同义词：ytterbiumYb

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