Therefore, controlling the formation of asphaltene is important to asphalt aging resistance.

First, extract the asphaltene and resin taking oil separation method as a reference.

借鉴石油三组分分离沥青质和胶质的方法，分离提取出低温煤焦油沥青质和胶质。

A Study of Asphaltene Deposition Caused by CO_2 Injection in Reservoirs

向油藏中注CO2时引起的沥青质沉淀研究

Experiment on precipitation amount and mechanism of asphaltene in high-pressure gas injection process

高压注气过程中沥青质沉淀机理及规律的实验研究

The asphaltene contents in one kinds asphalt was higher than another asphalt.

两种基质沥青是指四组分含量差别较大。

An effective method for determination of asphaltene content in oils is reported.

介绍了一种用分光光度法测定油品中的沥青质含量的方法。

Preparation of natural oil wet cores by using asphaltene crude oil

利用沥青质原油制备天然油湿岩心

Adsorption and Precipitation Mechanism of Petroleum Asphaltene and its Influence Factors

石油沥青质的吸附、沉淀机理及其影响因素

Evaluation and control of formation damage induced by crude asphaltene precipitation

原油沥青质沉积引起储层损害的评价与控制

Its component is characteristic of high resin and low asphaltene.

其组成具有高胶质、低沥青质的特点。

Experimental studies on asphaltene precipitation under high pressure gas injection

高压注气条件下沥青质沉淀的实验研究

Now the high concentration of asphaltene and other impurities on the transport and processing of crude oil caused difficulties.

现在高浓度的沥青烯以及其他的杂质对原油的输送和加工造成了困难。

The experimental results indicate that the reaction in initial stage of asphaltene hydrocracking is first order.

试验结果表明，沥青烯加氢裂解的初始阶段为一级反应。

Customs and Excise certificate and a copy of the original.

海关注册登记证原件及复印件.

Li Shuang, not all will be cut stone, or the use of drugs.

李爽介绍, 并不是所有结石都会开刀, 或者使用药物.

This wall was built of cut stone.

这堵墙是用琢下的石头造成的.

What they choose severally is accurate cut point, authoritative and macroscopical analysis, system and comment deep.

他们各自选择的准确切入点, 权威而宏观的分析, 系统而深入的评述.

The cut angle can be adjusted, with very small distortion and high precision.

剪切角可调整, 被减板变形小,精度高.

Be use for school and individual making wood cut.

供学校及个人制作木板画用.

The formation of wave-cut platform-Ma Shi Chau is frequently subjected to wave erosion.

海蚀 平台的形成 - 马屎洲经常受到海浪的冲刷.

Of course, Some poor clearance outside the real estate price cut as much as are more 50 %.

当然, 关外的一些较差楼盘降价幅度也有50%以上的.