| 单词 | olefine |
| 释义 | olefine (once / 562825 pages) n WORD FAMILY olefine: olefines USAGE EXAMPLESThe temperature must be above 18�; and the absorption is prevented by ammonia, olefines, alcohol, and some other substances. Various, Encyclopaedia Britannica, 11th Edit...(2011) The esters of the higher fatty acids, when distilled under atmospheric pressure, are decomposed, and yield an olefine and a fatty acid. Various, Encyclopaedia Britannica, 11th Edit...(2011) Others of the olefines are present in minute quantities. Martin, Edward A., The Story of a Piece of Coal—What I...(2010) n any unsaturated aliphatic hydrocarbon Syn|Hypo|Hyper alkene, olefin ethene, ethylene a flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic TCE, trichloroethane, trichloroethylenea heavy colorless highly toxic liquid used as a solvent to clean electronic components and for dry cleaning and as a fumigant; causes cancer and liver and lung damage aliphatic compound organic compound that is an alkane or alkene or alkyne or their derivative |
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