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1·A hydrocarbon was known to be either an alkene or alkane.

某碳氢化合物已知可能是烯烃或是烷烃。

2·In the roots, there were carboxylic acid ester and alkane.

而茅莓根的主要化学成分是有机酸酯和烷烃。

3·The relative content of alkane Compositions decreased with time.

烷烃类单体，随着时间增大相对含量减小。

4·It is a saturated hydrocarbon belonging to the alkane homologous series.

是饱和碳氢化合物，属于烷烃同系物。

5·The structure matrix was applied to forecast chromatograph retention index of alkane.

将结构矩阵应用于链烷烃色谱保留指数的预测。

6·The GC-MS analysis also shows a declination of heavy normal alkane in the degraded oil.

通过气相色谱分析，发现原油中烷烃组分发生变化，正构烷烃碳数分布曲线向轻组份方向移动。

7·The extractive is diluted by the alkane-cycloparaffin solvent with weight ratio 1: (0.1-0.5).

所述提取物用链烷-环烷溶剂 以溶剂对提取物为（0.1～0.5）∶1的重量比预先进行稀释。

8·Therefore, the study on bifunctional catalysts and their application in alkane conversion is necessary.

因此，对催化烃转化反应的双功能催化剂的研究就显得十分重要。

9·Conclusion: Volatile components of apple seed are organic acid, olefins, alkane, aldehyde, ketone, phenol.

结论：苹果籽含有有机酸、烯烃、烷烃、醛、酮、酚类挥发性成分。

10·Oil and natural gas contains a lot of saturated hydrocarbons, but it is difficult to isolate a pure alkane.

石油和天然气中含有大量饱和烃，但很难分离出纯的某一烷烃。