| 单词 | gallium |
| 释义 | gallium /gal"ee euhm/, n. Chem. a rare, steel-gray, trivalent metallic element used in high-temperature thermometers because of its high boiling point (1983°C) and low melting point (30°C). Symbol: Ga; at. wt.: 69.72; at. no.: 31; sp. gr.: 5.91 at 20°C. [1870-75; < NL, equiv. to L gall(us) cock (trans. of F coq, from Lecoq de Boisbaudran, 19th-century French chemist) + NL -ium -IUM] |
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