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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。

The energetic interaction between dyes and PAN-DCD is related to the number of sulfonic acid group in dye structure.

因此,染料分子与PAN-DCD之间相互作用的絮凝脱色过程是受能量作用和疏水作用共同制约的。

In water adsorption process, it can adsorb water while exclude other hydrocarbon molecules, so it is widely used in deep drying of oil cracked gases, e.

在水吸附过程中,它可以吸附水分,同时排除其他碳氢分子,因此它广泛应用于深层干燥的石油裂解气,体育g。

In this study, the severe acute pancreatitis specific EN formula was composed based on the rationale of the nutritional mechanism of the disease, and the alanyl- glutminedipeptide was added into the formula. This study was cut in the combining site of clinical nutrition pharmacology and immunology to probe the effect of Gln in the special formula in SAP rat form several aspects including mucous barrier, immunological barrier and systemic inflammatory responses.

本课题研究在成功建立急性重症胰腺炎模型的基础上,在SAP专用肠内营养配方中加入水溶性和稳定性好的丙-谷氨酰二肽,并从临床营养药理学和免疫学的结合点切入,采用免疫学、分子生物学研究手段,重点从肠屏障功能、免疫功能、细胞因子方面研究早期肠内营养加谷氨酰胺防治SAP营养治疗作用机制。

The present invention relates to a water-soluble associative cellulose ether having a DP viscosity from 250 to 20,000 mPa's, measured at a concentration of 1 % by weight, and a molecular substitution, MS, from 0.0001 to 0.005 of a hydrophobic substituent containing an unsubstituted or substituted hydrocarbon group of 8-24 carbon atoms.

本发明涉及一种水溶性缔合纤维素醚,其在1重量%的浓度下测量的DP粘度为250-20,000mPa's,并且含有未取代或取代的C8-C24烃基的疏水取代基的分子取代度MS为

The thesis mentioned that the conformation of lipase molecular can be induced by substrate to be an activated one in organic phase through constructing a water-in-oil micro-emulsion system. The activated conformation was recorded using high cross linking degree polymer. The effect of inducement on the activity of recorded lipase polymer was studied, the catalyzed property of recorded lipase polymer in water phase was investigated, and the fluorescence spectrum of lipase solution and recorded lipase polymer under different kinds of denaturalized circumstance were analyzed.

本文提出通过构建油包水型微乳体系,使酶分子能够在有机相中被反应底物诱导出活性构象,利用高交联度聚合物对该构象进行刻录,比较了底物诱导对刻录酶活性的影响,考察了刻录酶在水相中催化特性,并对脂肪酶溶液和刻录酶聚合物在各种变性条件下的荧光光谱进行分析。

For the first time, scientists have directly observed how water lubricates the movements of protein molecules to enable different functions to happen.

科学家们首次直接观察到了水是如何润滑蛋白质分子运动的。水的润滑作用帮助蛋白质担负各种不同的功能。

Based on the judgement on the existing of whether leading functional group or unleading functional group,if unleading exists,what about its bond type,with these pre-classification information,a new classification methods and uint structure model which can reflect the name,composition,stucture and function was put forward in this paper.

前言 高性能混凝土外加剂分子只存在磺酸、羧酸两种主导官能团,以磺酸、羧酸、&磺酸-羧酸&三种方式存在,因而把高性能外加剂分成磺酸、羧酸、&磺酸-羧酸&三大系列 [1、2 ]。磺酸系列外加剂的一个重要性能是高减水率,故有时将它称之为高效减水剂。

With CO2 as acidifying agent, potassium chromate was directly reduced to chromic oxide hydrate under hydrothermal conditions using formaldehyde as reducing agent.

以CO2气体为酸化剂,小分子有机化合物甲醛为还原剂,通过表面活性剂处理,在水热条件下直接还原铬酸钾水溶液得到水合Cr2O3,继而800℃下煅烧得到球形Cr2O3超细粉体。

Remove water chlorine, hydrogen sulfide, heavy metals and microorganisms, has bactericidal inhibitory effect at the same time, Adjusting the pH of water, the human body balanced leaching of trace elements and minerals required, far infrared technology, will macromolecules Mission water cut into small molecules of water activity.

除去水中的氯、硫化氢、重金属和微生物,具有杀菌抑菌作用,同时,调节PH值,均衡溶滤出人体所需的微量元素和矿物质,远红外线技术,将大分子团水切割成小分子团活性水。

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推荐网络例句

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。