| 单词 | carbon |
| 释义 | carbon —carbonless, adj. /kahr"beuhn/, n. 1. Chem. a widely distributed element that forms organic compounds in combination with hydrogen, oxygen, etc., and that occurs in a pure state as diamond and graphite, and in an impure state as charcoal. Symbol: C; at. wt.: 12.011; at. no.: 6; sp. gr.: (of diamond) 3.51 at 20°C; (of graphite) 2.26 at 20°C. 2. See carbon copy. 3. a sheet of carbon paper. 4. Elect. a. the carbon rod through which current is conducted between the electrode holder and the arc in carbon arc lighting or welding. b. the rod or plate, composed in part of carbon, used in batteries. [1780-90; < F carbone, coinage based on L carbon- (s. of carbo) charcoal] |
| 随便看 |
英语词典包含168451条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。