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atomic number 58
n.
a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
同义词:
cerium
Ce
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atomic number 58
n.a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group 同义词:ceriumCe
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