单词 | ytterbium |
释义 | ytterbium (once / 909178 pages) n WORD FAMILY ytterbium USAGE EXAMPLESThe unveiling of the super-accurate strontium optical clock comes just a few months after a related group revealed a device based on ytterbium. Nature(Jan 22, 2014) “In the case of Ytterbium ion qubits in use in my lab, this projects to coherent lifetimes of many hours,” said Biercuk. Forbes(Jun 19, 2013) A new atomic clock, which is the most accurate ever, uses ytterbium atoms and lasers to precisely define a second. BBC(May 31, 2013) n a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime Syn|Hyper Yb, atomic number 70 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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