单词	europium
释义	europium noun eu·​ro·​pi·​um yu̇-ˈrō-pē-əm  : a metallic chemical element of the rare-earth group that is used especially in television screens and fluorescent lamps see Chemical Elements Table Example Sentences Recent Examples on the Web The same goes for the use of europium and terbium in lighting applications. John Timmer, Ars Technica, 20 May 2022 In practice, thorium and uranium are difficult to measure in this way, so in the new study, the researchers propose to instead look for europium—another element produced by neutron star collisions that sports a clearer spectroscopic signature. Marcus Woo, Scientific American, 17 Nov. 2020 But if the findings turn out to be true, a search for stellar europium could help astronomers find the planetary systems most likely to harbor habitable worlds. Marcus Woo, Scientific American, 17 Nov. 2020 During the last 34 million years, the fossils slowly absorbed yttrium, europium, terbium, and dysprosium from the fluid trapped in the mud. Jennifer Frazer, Scientific American, 21 Sep. 2020 Rare earth elements were once considered an unwanted byproduct of processing uranium until the phosphorescent properties of europium were deployed in tubes that made color television possible in the 1960s. Aldo Svaldi, The Denver Post, 12 Jan. 2020 The mine started operations in the 1950s by producing europium, which was used to make red colors in early televisions. Pamela Boykoff, CNN, 3 July 2019 With names like europium, scandium and ytterbium, the bulk of rare earth minerals are extracted from mines in China, where lower wages and lax environmental standards make production cheaper and easier. Washington Post, 8 June 2019 Yet the mine's role at the center of the U.S.-China faceoff over 17 elements with names such as neodymium, terbium and europium is not without irony. David J. Lynch, Anchorage Daily News, 11 June 2019 See More Word History Etymology New Latin, from Europa Europe First Known Use 1901, in the meaning defined above Medical Definition europium noun eu·​ro·​pi·​um yu̇-ˈrō-pē-əm  : a bivalent and trivalent metallic element of the rare-earth group found in monazite sand —symbol Eu see Chemical Elements Table
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