Carbon

['kɑːb(ə)n] or ['kɑrbən]

解释:

(noun.) a copy made with carbon paper.

(noun.) an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds.

编辑:罗伊--From WordNet

解释:

(n.) An elementary substance, not metallic in its nature, which is present in all organic compounds. Atomic weight 11.97. Symbol C. it is combustible, and forms the base of lampblack and charcoal, and enters largely into mineral coals. In its pure crystallized state it constitutes the diamond, the hardest of known substances, occuring in monometric crystals like the octahedron, etc. Another modification is graphite, or blacklead, and in this it is soft, and occurs in hexagonal prisms or tables. When united with oxygen it forms carbon dioxide, commonly called carbonic acid, or carbonic oxide, according to the proportions of the oxygen; when united with hydrogen, it forms various compounds called hydrocarbons. Compare Diamond, and Graphite.

埃维塔校对

解释:

n. an elementary substance widely diffused of which pure charcoal is an example.—n. Car′bide a compound of carbon with a metal formerly called Car′buret.—adjs. Carbonā′ceous Carbon′ic pertaining to or composed of carbon.—n. Car′bonate a salt formed by the union of carbonic acid with a base.—adjs. Car′bonated combined or impregnated with carbonic acid; Carbonif′erous producing carbon or coal.—n. Carbonisā′tionv.t. Car′bonise to make into carbon.—Carbonic acid an acid formed of carbon and oxygen generally gaseous and evolved by respiration and combustion.

手打:谢莉

例句:

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