查询词典 petroleum grease

I shall abide by the law of Chinese Government and the regulations of the university while studying at China University of Petroleum

在校学习期间遵守中国政府的各项法规和学校的规章和制度。

The paper suggests that the extraction of petroleum ether, polysaccharide and sodium copper chlorophyllin from banana leaves can be exploited as dishware abluent or abluent–assistants.

因此，从泡沫性能、表面张力、去污力三个方面，本研究认为香蕉叶石油醚抽出物、叶多糖和叶绿素铜钠盐可以开发作为餐具洗涤剂或洗涤助剂。

It,s allelchemicals were isolated through extraction, thin-layer chromatography, and column chromatograpathy. After the white clover was infused in ethanol and evaporation, the leavings was dissolved by water. The aqueous extract was extracted by petroleum,chloroform, ethyl acetate and n-Butanol successively, and the bioassay showed that the chloroform phase has obvious inhibitory effect, the inhibitory rate was 44.32%,88.08% on Abutilon theophrasti M., seedling length and root length, 82.08%,92.16% on Echinochloa crusgalli L., seedling length and root length, and the Amaranthus retroflexux L., germination rate is 0, the secondly was ethyl acetate phase.

运用萃取、薄层层析、柱层析等方法对白三叶草地上部分的化感物质进行初步分离，结果表明，白三叶草经乙醇浸提旋转蒸发后用蒸馏水溶解，依次用石油醚、氯仿、乙酸乙酯、正丁醇萃取，生物测定表明氯仿组分对杂草的抑制作用最强，对苘麻芽长和根长抑制率分别为44.32%、88.08%，对稗草芽长和根长的抑制率分别为82.08%、92.16%，反枝苋的发芽率为0；其次是乙酸乙酯相。

This article introduces a simple method, which is acetylation method, to determinate the hydroxy content in petroleum oxidation products.

文章介绍了一种测定石油氧化物中羟值的简便方法——乙酰化法。

Premise Liquefied petroleum gas is derived from oil gas, natural gas, the gas production of refinery and petrochemicals. The main components are dimethylmethane, propylene, butane, butylene and such low class hydrocarbon. It's a gas with achromaticity and transparence; LPG is hardly dissolved in water, but dissolved in ethanol and aether, it can dissolve gas production, propagation oil and caoutchouc.

液化石油气（liquefied petroleum gas，LPG）是石油伴生气、天然气、炼油厂及石油化工厂的气体产品，经分离精制而来，其主要成分为丙烷、丙烯、丁烷、丁烯等低分子烃；无色透明，带有微弱的臭味；难溶于水，溶于乙醇和乙醚等，并能溶解石油产品，动植物油和天然橡胶。

Requests on resistance of corrosion destructibility of sealing interfaces that related to sealing up and cementing exercises in petroleum engineering are more and more of rigidity. It is urgently needs to resolve all sorts of problems that affect interface bonding quality. Conventional cement slurry design resist the destructive function worse, and can't like to satisfy the request to carry on latter production such as perforation, acidify, fracture etc.

常规油井水泥抵抗破坏的性能较差，不能很好满足水泥环抗冲击振动以及射孔、压裂等各种变形破坏的要求，这在一定程度上限制了小间隙、大位移、定向与水平井等特殊钻井工艺技术的发展，也制约了后期压裂、酸化等诸多开发工艺措施的实施。

Under 300 W medium mercury lamp, the quantum yields of petroleum hydrocarbons at 365 nm were determined by potassium ferri-oxalate actinometer. And their reaction kinetics constants were measured too.

并采用高光密度法，以K3Fe(C2O4)3做光露计，300W中压汞灯为光源，在365nm波长处测定石油烃类的反应速率常数和量子产率。

Sinopec also said that completion of the acquisition, Addax Petroleum will continue to retain the existing management team and employees.

中石化同时表示，收购完成后，将继续保留Addax石油公司原有的管理团队和员工。

As a multi-national oil and gas exploration and development company, Addax Petroleum in West Africa and the Middle East have oil and gas assets.

作为一家跨国油气勘探开发公司，Addax石油公司在西非和中东拥有油气资产。

Another Chinese oil company, China Petrochemical Corp., or Sinopec Group, announced plans in June to purchase Addax Petroleum Corp.

中国的另一家石油公司——中国石油化工公司宣布，计划在6月购买Addax石油公司（Addax Petroleum Corp。

We are in a good position to meet your requirements.

我们完全可以满足你方的需求。

We are all pervade d with a sense of disaster.

我们普遍有大祸降临的感觉。