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汉语拼音：wán tīng

饱和烃的一类，分子中含有单键结构的开链烃，通式为CnH2n+2，如甲烷（CH4）、乙烷（C2H6）等。

• Previous experiments and simulations, however, indicated that the free energy of hydration did not match this predicted linear trend.

  然而，过去的研究和模拟表明，烷烃的水化自由能并不符合预计的线性变化趋势。

• The HFA inhalers also have encountered resistance because some asthmatics insist that they do not work as well as the CFC variety.

  但氢氟烷烃式吸入器也同样遭遇阻力，因为有些气喘患者坚信它的效果不如氟氯碳化物式产品。

• Chemical fossils (e. g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age.

  化学化石（烷烃和卟啉）是前寒武纪地层中生命存在的唯一证据。

• That means each of its molecules contains an oxygen atom as well as the carbon and hydrogen found in an alkane.

  就是说每个分子也都含有氧原子以及在烷烃中存在的碳和氢。

• It concluded that there is a liner relation between the physical chemical properties of alkanes and effective length of carbon chain.

  研究表明，链烷烃的许多物理化学性质与有效碳链长度成线性关系。

• The contacting is carried out at a temperature and pressure and for a length of time sufficient to produce the fluoroiodoalkane compound.

  一定温度和压力下接触一定时间，该温度和时间足以制得氟碘烷烃化合物。

• Synthesizing very long alkanes is not trivial, especially in the quantities and purities required to put these simulations to the test.

  合成很长的烷烃并不轻松，尤其是达到实验所需要的数量和纯度。

• Then-paraffin content and carbons distribution of five diesels have been determined and analyzed in the light of statistics in detail.

  对五种柴油的正构烷烃含量和碳数分布作了测定，并从统计学角度进行了详细的描述和分析。

• And Virent, based in Madison, Wisconsin, is making alkanes out of sugars using a chemical, rather than a biological, process.

  威斯康辛州麦迪逊的Virent正通过一种化学、而不是生物的过程从糖中提取直链烷烃。