查询词典 petroleum grease

China Petroleum and Chemical Industry Association赵俊贵pointed out that the oil and chemical industry after years of information-based construction and application of information technology industry as a whole has improved continuously, the second half of fertilizers and rubber will choose two pilot sub-sectors, continuing to promote oil and integration of the chemical industry the level of development of the two.

中国石油和化学工业协会副会长赵俊贵指出石油和化工行业信息化经过多年的建设，行业整体信息化应用水平不断提高，下半年将选择化肥和橡胶两个细分行业进行试点，持续推进石油和化工行业两化融合发展水平。

The China Chemical Engineering Reagent Website(www.ce-r.com)focus in the information service market of chemical engineering products, with integration of the organic chemical engineering, inorganic chemical engineering, chemistry reagent , petroleum chemical engineering, foundation chemical engineering, plastics, rubber, coating, etc. we are aiming on the profession different acteristics mainly the related product carry on research analysis of system, to building up the price database service system.

中国化工试剂网（www.ce-r.cn）专注于化工产品市场资讯的信息服务，整合化工行业内的有机化工、无机化工、化学试剂、石油化工、基础化工、塑料、橡胶、涂料等几大行业，针对各行业不同的特点及主要相关产品进行系统的研究与分析，建立系统的产品价格服务体系。

College of Chemical Engineering,China University of Petroleum,Beijing 102200,China

中国石油大学化学科学与工程学院，北京102249

Objective To investigate the chemical constituents of the petroleum and the chloroform extracts of Ledum palustre L.

目的对细叶杜香石油醚和三氯甲烷部位的化学成分进行研究。

Chloropicrin in vegetables and fruits was determined by gas chromatography with ECD after extracted with petroleum ether under ultrasonic.

采用石油醚对蔬菜、水果样品进行超声波提取，以气相色谱电子捕获检测器测定氯化苦残留。

Also the molecular structure and functional effects of this active component were studied in detail. 1 Extraction, separation, purification and structural identification of the functional component in Chufa After initial handling of waste slurry to solid powder, ethanol was used to lixiviate it followed by the extraction with petroleum ether,ethyl acetate,n-butyl alcohol one by one, the polarity of three organic reagents being changed from low to high.

荸荠功能因子的提取、分离、纯化及结构鉴定以马蹄粉厂产粉废浆为原料，经过实验室初处理成固态原料粉后，用乙醇浸提，再将浸提物以水悬浮，依次通过极性从小到大的石油醚、乙酸乙酯、正丁醇三种有机溶剂两相萃取分部，并以金黄葡萄球菌、枯草芽孢杆菌和致病大肠杆菌为指示菌，检测上述各部分提取物的功能效果。

In view of economy development,at present the petroleum mining in Daqing Cit...

可见，无论在经济意义上，还是在生态意义上，大庆市的可持续发展都成为一个无法回避的重大现实问题。

And the Tertiary clastic and carbonate rocks are the reservoir of petroleum system.

以第三系碎屑岩、碳酸盐岩为储集层的油气体系。

Migration behaviors of petroleum in clastic carriers seem to be inhomogeneous.

油气在以连通孔隙为流体储、流空间的碎屑岩输导层中的运移具明显的非均一性。

Current estimates are that global methane clathrate deposits contain roughly 20,000 trillion cubic meters of methane, which is twice the amount of all known sources of coal, petroleum, natural gas, and so on.

目前估计全球可燃冰所含的甲烷量约有2万兆立方公尺，大约为目前已知所有煤、石油、天然气等传统化石燃料的2倍。

The network space is the typical form of abstract space when it comes to the digital stage.

网络空间是抽象空间数字化阶段的典型形式。

The Notarial System,as the system of judicial certification in our country,is both the constructor and the defender of social credit system,It has its special value and function in the social honesty.

公证制度作为我国司法证明制度，既是社会信用体系的建设者，同时也是社会信用的捍卫者，在诚信中有其特殊的价值和功能。