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atomic number 62
n.
a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite
同义词:
samarium
Sm
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atomic number 62
n.a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite 同义词:samariumSm
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