| 单词 | rare earth |
| 释义 | rare earth (once / 10854 pages) n WORD FAMILY rare earth: rare earths USAGE EXAMPLESThe most powerful commercial magnets, by contrast, contain elements known as rare earths. Economist(Nov 17, 2016) Quest is in the early stages of developing a rare earth metal project in northern Quebec and does not yet have an operating mine. Reuters(Nov 16, 2016) The new advance—15 years in the making—uses rare earth metals called lanthanides layered over cells on a microscope slide. Science Magazine(Nov 04, 2016) n any element of the lanthanide series (atomic numbers 57 through 71) Syn|Hypo|Hyper lanthanide, lanthanoid, lanthanon, rare-earth element terbium metal a separate group of related lanthanides, including terbium, europium, gadolinium, and sometimes dysprosium group, grouping any number of entities (members) considered as a unit |
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