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。

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。

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。

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。

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。

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。

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。

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。

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。

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。

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。

They identified 20 genes that the alkane-producing strains had but that the non-alkane-producing strain lacked.

他们确定了产烷菌株而非产烷菌株缺少的20个基因。

The solvent capacity of ionic liquid for alkane is important to he separation of the alkylate and the catalyst.

而饱和烷烃在离子液体中的溶解能力对烷基化产物和催化剂的分离十分重要。

Basically, low concentration of alkane background gas has no effect on the removal efficiency of malodorous gas.

低浓度的烷烃背景气体对恶臭的脱除效率基本无影响。

The properties of alkane surfactant with carboxyl were studied in order to prepare ultrafine flake zinc powders.

摘要以制备超细鳞片状锌粉为目的，对羧酸烃类表面活性剂进行了研究。

Petroleum is a complex mixture of non-aqueous and hydrophobic components liken-alkane, aromatics, resins and asphalt.

石油是一种疏水混合物例如：烷烃，芳香烃，树脂和沥青。

Meanwhile, the cause of the difference in explosion risks between alkane andalkene from bond saturation is also analyzed.

同时根据烷烃和烯烃键的不同饱和度，分析了它们爆炸危险性差别的原因。

In the contrast, the effect of the kind of catalysts on oxidation of alkane under mild condition has been paid little attention.

相比之下，在氧化条件下，对此类催化剂催化烷烃反应研究的不多。

A colorless, odorless gaseous alkane, C2H6, that occurs as a constituent of natural gas and is used as a fuel and a refrigerant.

乙烷一种无色无味的气态链烷，分子式为c2h6，是天然气的组成成分，可用作燃料或。

There is no resin and asphaltene in the condensate, but 57% chain alkane and 35% cycloal-kane exist in light fraction ( C<10 ) .

凝析油中不含胶质和沥青质，在轻质组分中（C<10）链状饱和烃含量为57％，环烷烃为35％。

From there, the researchers narrowed down the possibilities until they identified the genes and enzymes necessary for alkane production.

通过这样，研究者缩小了可能性直到他们确定产烷必须的基因和酶。

The potential of alkane hydroxylases to catalyze high added-value reactions and their high exclusive performances are widely recognized.

其中烷烃加氧酶因可催化高增值反应且具有高效专一性而得到广泛认可。

Carbon distribution and content of normal alkane and isoalkane in rubber waxes are measured by using high temperature gas chromatography.

采用高温气相色谱法测定橡胶防护蜡中的正构烷烃和非正构烷烃的碳数及含量。

This makes part of alkane and aromatics, which are the ideal components for the refinery, into the slurry oil causing the FCC feedstock loss.

而大量的FCC油浆外甩导致部分可裂化的烷烃、芳烃等理想组分进入油浆，从而造成FCC原料的损失。

Compounds formed when some or all of the hydrogen atoms in a hydrocarbon (typically an alkane) have been replaced with chlorine and fluorine.

当烃(典型的烷烃)的几个或全部氢被氯和氟取代而生成的化合物。

Like ethanol, butanol is an alcohol. That means each of its molecules contains an oxygen atom as well as the carbon and hydrogen found in an alkane.

和乙醇一样，丁醇也属于醇类，这说明每一个丁醇分子包括一个氧原子和直链烷烃里的那种碳原子、氢原子。

That gives butanol more energy for a given mass and makes it more alkane-like in its properties; nor does it absorb water as readily as ethanol.

所以，丁醇释放的能量比同样重量的乙醇多，在特性是它更像直链烷烃分子；它也不像乙醇那么容易吸水。

Petroleum is a kind of compound composed of alkane, cyclane and aromatics, which have the potentiality leading to cancer, deformity and mutation.

石油主要是由烷烃、环烷烃和芳香烃组成的混合物，具有致癌、致畸、致突变的潜在性。

The results showed that assessing the quantity and the species of grass of grazing animal with alkane technology had preferable value in application.

结果表明：利用链烷烃技术测定放牧动物的采食量和牧草的种类，具有较好的应用价值。