查询词典 formation

A novel method for determination of benzoyl peroxide with spectrophotometry was developed. Inclusion ratio of β cyclodextrin to dibenzoy peroxide and benzoic acid is obtained with spectrophotometry.The mechanism of the inclusion was studied,too. The results showed that β-CD react with dibenzoyl peroxide to form a 1:1 or 2:1 host-guest complex, with the apparent formation constants of 5.0× 10~2and 2.5× 10~4 , respectively.β-CD reacts with benzoic acid to form a 1:1 host-guest complex with the apparent formation constant of 6.9 × 10~2 after the dibenzoyl peroxide was reduced by hydroxyl ammonium chloride.

建立了用β环糊精测定过氧化苯甲酰的分光光度法，并测定了β环糊精与过氧化苯甲酰和苯甲酸的包结比，随着β-CD浓度的增大，可与BPO分别形成1：1或2：1的包容络合物，包结常数分别为5.0×10~2和2.5×10~4，与苯甲酸形成1：1的包容络合物，包结常数为6.9×10~2；由于包结物的吸光度值比过氧化苯甲酰的吸光度值大大增加，建立了一种当β-CD存在下，在水溶液中测定过氧化苯甲酰的方法。

SiO2 causes early decomposition of CaSO4 due to the formation of calcium silicate and dicalcium silicate during the reaction of CaO and SiO2 at high temperature, and the formation of calcium sulphosilicate above 1200℃ helps to retard CaSO4 decomposition.

SiO2在高温下易与CaO发生固相反应形成硅酸二钙和硅酸钙使得CaSO4的初始分解温度降低，在1200℃以后硫硅酸钙的形成对CaSO4的分解有一定的延缓作用。

Prolonging nitration time and increasing reaction temperature would promote the formation of dinitro products while shortening the nitration time and decreasing reaction temperature would promote the formation of mono-nitro products.

延长反应时间和提高反应温度有利于二硝化产物的形成，缩短反应时间和降低反应温度有利于单硝化产物的形成。

The first half of the chapter begins with the introduction of three common viewpoints over the two kinds of theories, followed by deep investigation and description of some biased nature in them, then comes up with the conclusion that we must draw a clear distinction between what was said by Marx himself and what has long been accepted as dogmatical statements. The later half of chapter introduces various understandings to the theory of three social orders evoked by the discussion of economic social formation, points out the drawbacks of and the author"s disproval to the idea that economic social formation only exists in a definite historical period. This chapter is to deepen the understanding of Marx" theory of three social orders through the discussion of the other two important theories related to it.

首先介绍了迄今为止在&三形态说&和&五形态说&的讨论中出现的三种基本观点，并分别对这些观点加以反思，通过反思指出了这几种观点中存在的一些偏颇之处，提出了在讨论三大社会形态理论和五种社会形态理论的相互关系时要对马克思本人的&五形态说&和传统的教条化的&五形态说&加以明确的区分；接着介绍了在讨论&经济的社会形态&这一范畴时所引发的对三大社会形态理论的不同理解，指出了把&经济的社会形态&理解为一种特定历史阶段的社会形态类型所产生的问题，反对把&经济的社会形态&理解为一种特定历史阶段的社会形态类型。

The Neoproterozoic Jiuliqiao Formation in Huainan region consists of sandy limestone, silty limestone, stromatolitic limestone and dolomitic limestone. This formation has been well researched by many researchers because the famous macro fossils of the "Huainan Biota" have been found in it.

安徽淮南地区新元古代九里桥组主要由砂质、泥质灰岩、叠层石灰岩和白云质灰岩组成，因其中含有著名的地球早期宏体生物&淮南生物群&的主要化石而倍受研究者的关注。

Methods Cerebral blood flow and intracranial pressure were measured after electrolytical destruction of the dorsomedial nucleus of the hypothalamus, the midbrain reticular formation, or/and the reticular formation of the medulla oblongata.

电解毁损家兔下丘脑背内侧核、中脑网状结构和延髓网状结构，观察脑血流量和颅内压的变化。

There exist electrodissolution and Cu2O layer formation on the Copper electrode during anodic processes.The increase of temperature promotes the growth of Cu2O layer and argon gas purging also influences Cu2O layer formation.

纯铜电极在阳极氧化过程中存在着Cu的阳极溶解和电极表面生成Cu2O膜的反应，温度升高有利于Cu2O膜的生成，除氧与否影响纯铜电极的成膜反应。

Simulation results verify that insulated board can effectively protect the heat from transferring into the foundations, and the frozen table is always around the lower bottom of the boards; the position of the frozen table with insulated boards is higher than that of without; the embank- ment formation has a better effect on the center of embankment, the shoulder and toe of the roads than others; after consideration of the construction effect, the best lay out of the insulated boards is higher than the position of natural ground surface to 0.3-0.6 m; this formation of the embankments is the right effective constructer to be used in the permafrost on the Qinghai-Tibet railway.

通过数值模拟可知：保温板能够有效地阻止热量由路基面向下传入地基中，使0℃等温线始终在保温板底层；复合路基多年冻土上限的位置要比无保温板时的高；该结构形式对路基中心、路肩和坡脚下的多年冻土上限抬升的综合效果更好；考虑施工条件后，复合路基在保温板铺设距离天然地面之上0.3~0.6 m对于路基稳定性最为有利；该路基结构形式为青藏铁路多年冻土区路基的理想结构形式，有利于克服全球变暖的影响。

Low-intensity pulsed ultrasound can accelerate bone healing via upregulation of cartilage formation and maturation phases of endochondral bone formation.

较多的研究表明低强度脉冲超声可以促进骨折愈合，其机理可能是加速了软骨内化骨的过程。

Objective1 To observe the biofilm formation on urinary catheters from critical patients.2 To analyse the risk factors of biofilm formation on urinary catheters from critical patients.3 To compare the eradicative effects of different irrigation methods in vitro.

目的1观察重危患者留置尿管表面生物被膜的形成情况。2分析重危患者留置尿管表面BF形成的危险因素。3比较体外不同冲洗法在清除尿管表面BF中的作用。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。