| 词汇 | fractional-distillation |
| 释义 | fractional distillation noun[ U ] chemistry specializeduk /ˌfræk.ʃən.əl dɪs.tɪˈleɪ.ʃən/ us /ˌfræk.ʃən.əl dɪs.təˈleɪ.ʃən/ the chemical process of separating different substances that have different boiling points by heating a liquid mixture until it turns into gas and then cooling and collecting each substance separately分馏（化学过程，将液体混合物加热，使其中沸点不同的各个物质气化，再分别冷却收集，从而得到分离） Chemistry - general words acceptor aerosol aerosolize allotrope amphiprotic balanced equation chemical equation electrolyte endocrine disruptor endothermic epitaxial epitaxially epitaxy inorganic chemistry ionic bond nonchemical nonelectrolyte nonreactive preatomic reactive In this fractional distillation a vast variety of products are now obtained. The ethers are returned as ethyl acetate, but from fractional distillation amyl acetate was found to be present. This apparatus was the forerunner of that used to-day, for effecting the separation of liquids which boil at different temperatures, by the process called fractional distillation. fractional distillation | American Dictionaryfractional distillation noun[ U ] us/ˈfræk·ʃə·nəl ˌdɪs·təlˈeɪ·ʃən/ chemistry the process of separating parts of a liquid by heating it gradually so that different parts become gas, rise up, then turn back into liquid that can be collected as they cool Examples of fractional distillationfractional distillation Ramsay continued to search for these gases using the method of fractionaldistillation to separate liquid air into several components. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It consists mostly of organic compounds obtained by the fractionaldistillation of petroleum, enhanced with a variety of additives. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Bitumen is obtained by fractionaldistillation of crude oil. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The individual components of resin can be separated by fractionaldistillation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For this reason, ethanol can not be completely purified by direct fractionaldistillation of ethanol-water mixtures. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The volatile fluorides can be separated from excess fluorine by condensation, then separated from each other by fractionaldistillation or selective reduction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Helium is extracted by fractionaldistillation from natural gas, which contains up to 7% helium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The products of these reactions are separated using a variety of techniques including distillation especially fractionaldistillation, precipitation, crystallization, adsorption, filtration, sublimation, and drying. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These "fractions" are the origin of the term "fractionaldistillation" or "fractionation". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This fractionaldistillation supported the use of heavy oil fuels, the unusable tars and asphalts separating out in the vapouriser. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Xylidines are produced as byproducts of fractionaldistillation of coal tar. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Kerosene, when it was introduced in the early 1850s, was much cheaper and easily made by fractionaldistillation of petroleum. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Chlorosilanes obtained from crude silicon are purified by fractionaldistillation techniques and then reduced with hydrogen to give silicon of purity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Neon, argon, krypton, and xenon are obtained from air in an air separation unit using the methods of liquefaction of gases and fractionaldistillation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For large-scale use, helium is extracted by fractionaldistillation from natural gas, which can contain up to 7% helium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of fractional distillation These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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