| 单词 | lanthanum |
| 释义 | lanthanum (once / 223006 pages) n WORD FAMILY lanthanum USAGE EXAMPLESMetals firms began recycling more lanthanum, dysprosium and other coveted elements from industrial waste. Wall Street Journal(Jul 18, 2016) It also plans to court more Japanese customers, specifically for its lanthanum and cerium products, used in petroleum refining and catalytic converters respectively. Wall Street Journal(Sep 01, 2015) Previous experiments with this substance suggested that adding lanthanum could help improve its electrical conductivity. Economist(Jul 30, 2015) n a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth Syn|Hyper La, atomic number 57 metal, metallic element any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
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