汉英词典
Chinese-English Dictionary
MEANING OF 稀有元素
稀有元素
trace element (nutrition)
自然界中存在的数量少或很分散的元素。如锂﹑铍﹑钽﹑镓﹑硒﹑碲﹑氪﹑氩﹑氡等。
yǒu yuán
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