| 单词 | lanthanums |
| 释义 | lanthanum /lanˈthə-nəm/nounA metallic element (symbol La; atomic no 57) ORIGIN: Gr lanthanein to escape notice, because it lay hidden in rare minerals until 1839 lanˈthanide noun A member of the lanthanide series, a group of rare-earth elements from atomic number 57 (lanthanum) or 58 to 71 lanthanum glass noun Optical glass used for high-quality photographic lenses, etc |
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