| 单词 | rare-earth element |
| 释义 | rare-earth element【机】 烯土元素 rare-earth element rare-earth element AHD: [râr”ûrth“] D.J. [7re*r6T8G]K.K. [7rWr6PG]n.（名词）Any of the abundant metallic elements of atomic number 57 through 71.Also called lanthanide 稀土元素：原子序数在五十七至七十一之间，有大量储存的金属元素中的任意一种也作 lanthanide语源:So called because they were originally thought to be rare 由于开始时它们被认为数量稀少，所以这样命名 |
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