生产这种不饱和烃类最重要的路线是靠蒸汽裂解，主要以石油气体和石脑油作原料。
The most important route to produce these unsaturated hydrocarbons is by steam cracking, using principally petroleum gases or naphtha as feedstock.
在石油化学工业中所用的许多原料是不饱和烃类，如乙烯、丙烯、丁烯和丁二烯。
Many of the raw materials used in the petrochemical industry are unsaturated hydrocarbons, such as ethylene, propylene, butene and butadiene.
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。
Oil and natural gas contains a lot of saturated hydrocarbons, but it is difficult to isolate a pure alkane.
气顶气藏主要分布在下第三系，是在高饱和油藏的基础上，由于不能溶解于石油中的天然气的溢出而形成。
The gas cap pools, mainly distributed in Paleogene, are formed by spillover of undissolved gas in high saturated oil pools.
由于石油的主要成分包括饱和烃、芳香烃类化合物、沥青质、树脂类等，这些物质难以降解，并且对水生生物有毒杀作用。
The main components of oil are saturated hydrocarbons, aromatic compounds, asphaltenes, resins, and so on. It is difficult to degrade these substances which are bad for aquatic life.
石油污染对非饱和砂土抗剪强度影响不显著。
For unsaturate sands, oil pollution has no prominent influence on shear strength.
辛烷值是什么？根据定义，辛烷值是任何单一的石油、饱和烃发现作为燃料和溶剂。
By definition, octane is any isomeric saturated hydrocarbon found in petroleum and used as a fuel and solvent.
在生物降解油柱中观测到了石油总体组成、饱和烃和芳烃系列化合物随深度呈连续而系统的梯度变化。
Systematic changes seen as marked gradients in petroleum bulk composition, component concentrations and molecular indicators have been observed in biodegraded oil columns.
裂解汽油加氢装置的物料含有大量易自聚的不饱和烃，自聚造成装置中的分馏器堵塞，会严重影响石油化工厂的连续生产。
The materials to be treated in the distillation towers fo pygas hydrogenation unit contain a lot of unsaturated hydrocarbons which have strong tendency of self - polymerization.
对饱和吸附后的磁铁矿进行再生处理后，其对石油的去除率稳定在85%。
Oil removal rate could keep at 85% after the regeneration treatment of stearic acid-modified magnetite.
石油二次运移是一个复杂的地质过程，本文通过利用饱和地层水的低孔低渗储层砂岩来进行石油二次运移模拟实验，初步研究了此过程的变化特征。
This paper primarily discusses the changeable features of the process through the modelling experiment of secondary migration using the reservoir sandstone with ultra-low porosity and permeability.
方法：采用60%乙醇提取、石油醚去除脂溶性成分、水饱和正丁醇萃取法提取六月青皂苷。
Methods: The LYQ was extracted with the 60% ethanol, liposoluble impurity was removed by petroleum ether, then extracted by water-saturated butanol.
方法：采用60%乙醇提取、石油醚去除脂溶性成分、水饱和正丁醇萃取法提取六月青皂苷。
Methods: The LYQ was extracted with the 60% ethanol, liposoluble impurity was removed by petroleum ether, then extracted by water-saturated butanol.
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