| 单词 | cobalt |
| 释义 | cobalt (once / 5337 pages) n WORD FAMILY cobalt: cobalts USAGE EXAMPLESSo if not from those companies, where does Tesla gets its graphite, cobalt and lithium? Washington Post(Dec 30, 2016) Only a few worked in cobalt mines, but the poll results showed how problems are prevalent no matter the mineral. Washington Post(Dec 27, 2016) The Post connected this troubling artisanal cobalt trade with the batteries used by some of the world’s largest technology companies, including Apple. Washington Post(Dec 23, 2016) n a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition Syn|Hypo|Hyper Co, atomic number 27 cobalt 60 a radioactive isotope of cobalt with mass number 60; a source of exceptionally intense gamma rays; used in radiation therapy 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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