Beckmann是什么意思 Beckmann在线中文翻译

Beckmann

Beckmann 词典解释

1. 贝克曼
   ...贝克曼温度计的使用方法与注意事项,一、结构特点 贝克曼(Beckmann)温度计是一种用来精密测量体系始态和终态温度变化差值的水银温度计. 它的构造如图3-1所示,其主要特点如下: 1.刻度精细刻线间隔为0.01℃,用放大镜可以估读至0.002℃,...

Beckmann 双语例句

1. A device for determining molar mass with freezing point depression was improved, which consists of the Dewar bottle, sample container, Beckmann thermometer, and motor stirrer.
   介绍一个改进的凝固点下降法测定摩尔质量实验装置，它由保温瓶、凝固点杯、贝克曼温度计、电动搅拌器等几部分构成。
2. The ice/liquid mixtures of the coolant and the sample solution were respectively added in the Dewar bottle and the sample container to precool for 2~3 hours under stirring. Then some of the coolant liquid was replaced with coolant ice, the motor stirrer was restarted, and the temperatures were read from the Beckmann thermometer.
   实验时，先调节寒剂的组成使其凝固点低于待测溶液的凝固点～2℃，然后分别在保温瓶和凝固点杯中加入寒剂和待测溶液的冰水，启动搅拌器预冷却2~3小时，接着更换保温瓶中的寒剂冰水，重新启动搅拌器，记录贝克曼温度计读数。
3. A device for determining molar mass with freezing point depression was improved, which consists of the Dewar bottle, sample container, Beckmann thermometer, arid motor stirrer, Before the experiment, the freezing point of the coolant was controlled about 2℃ below the freezing point of the sample solution by adjusting the composition of the coolant.
   介绍一个改进的凝固点下降法测定摩尔质量实验装置，它由保温瓶、凝固点杯、贝克曼温度计、电动搅拌器等几部分构成。
4. When acetone oxime was used as substrates, lower conversion and selectivity were obtained. For cyclopentanone oxime as the substrate, the Beckmann fragmentation was observed.
   对于丙酮肟和环戊酮肟，前者重排得到N-甲基乙酰胺的选择性低，后者则不发生Beckmann重排。
5. The Beckmann rearrangement of Oxim is an important process during the production of caprolactam. It plays an important role in the yield and quality of the production.
   环己酮肟贝克曼重排是己内酰胺生产过程中的一个重要反应步骤，重排反应的好坏直接影响到己内酰胺的产量和质量。
6. Both Beckmann and Sunnunu spoke at a hearing of the Senate Homeland Security and Governmental Affairs Committee.
   苏努努和比奇曼都是在参议院国土安全和政府事务委员会上作证时发表上述观点的。
7. Because the kinetics of Beckmann rearrangement is very complicated and the reaction speed is very fast, the realization of its reaction kinetics is very variant.
   由于贝克曼重排反应的机理非常复杂，而且该反应速率极快，因此对其机理的认识很不一致。
8. Olav Beckmann died on 9th November 2006.Olav was a Research Fellow in Paul Kelly's research group.
   奥戴夫是 Paul Kelly 研究组的一名成员，许多人知道他是通过他的教学工作。
9. Beckmann says most Americans take a do-it-yourself approach to financial planning. A survey conducted by A. G.
   Beckmann说绝大部分美国人采取一个万事不求人的对财政计划编制的处理方法。
10. The rearrangement reaction of Oxim is a typical Beckmann rearrangement reaction.
    环己酮肟重排反应是一典型的贝克曼重排反应。
11. Recent development of vapor - phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam catalyzed by molecular sieves was reviewed.
    介绍了用以代替浓硫酸催化环己酮肟Beckmann重排反应制己内酰胺的各类分子筛催化剂的研究新进展，并对其反应机理、催化剂的失活与再生、反应新工艺进行了阐述。
12. It was found that the Beckmann rearrangement of cyclohexanone oxime could be performed smoothly in the catalytic media consisting of room temperature ionic liquid and acidic phosphorated compounds, and excellent conversion and selectivity were achieved under mild conditions without any additional organic solvents.
    发现酸性含磷化合物，如五氯化磷等在离子液体中可以高效地实现环己酮肟重排制己内酰胺，具有不需另加有机溶剂，选择性高等优点。
13. The Beckmann rearrangement of cyclohexanone oxime, phosphorus pentoxide (P_2O_5) and dimethyl formamide raction system into caprolactam was studied.
    研究了以环己酮肟、五氧化二磷(P_2O_5)、二甲基甲酰胺组成的反应体系进行Beckmann重排制备己内酰胺工艺，考察了不同溶剂、催化剂用量、温度、浓度及水分含量对重排反应的影响。
14. The Beckmann rearrangement of cyclohexanone oxime was effectively realized to prepare e-caprolactam by using phosphorous trichloride (PCl3) as catalyst in a two-phase system composed of 1-n-butyl-3- methylimidazolium tetrafluoroborate ([BF4]) ionic liquids and toluene.
    在1丁基3甲基咪唑四氟硼酸盐([BF4])与甲苯组成的两相体系中，以三氯化磷(PCl3)为催化剂，实现了由环己酮肟制备己内酰胺的液相贝克曼重排反应，两相体系有利于反应控制和体系取热。
15. And in cases where painters preserved the human figure, as in the work of Max Beckmann and de Chirico, that figure could not be known except through its wild distortions.
    在马克思·贝克曼和契里柯等画家的包含人体的作品中，人体只有通过强烈的扭曲才能被识别。
16. This paper reports a new process of synthesizing paracetamol from phenol by acetylization, oximation and Beckmann rearrangement.
    报道了由苯酚经过乙酰化、肟化、重排反应合成扑热息痛的一种新方法。
17. The influence of acid strength and pore confinement effect on Beckmann rearrangement reaction has been systematically studied by DFT calculations.
    本文中利用理论计算的方法系统地研究了固体酸的酸强度以及分子筛的孔道限域效应对贝克曼重排反应机理以及活性的影响。
18. Derivations of Beckmann's Allometric Growth Equation from Beckmann's Class-Size Model of City Hierarchies
    Beckmann城市体系异速生长模型的理论基础与实证分析
19. Beckmann rearrangement of cyclohexanone oxime into caprolactam catalyzed with phosphorus pentoxide
    P2O5液相催化环己酮肟重排制己内酰胺
20. A large amount of ammonium sulfate as by-product was formed in this process. And brings equipment corrosion, high cost etc. Vapor-phase Beckmann rearrangement over solid acid catalysts can avoid ammonium sulfate, however, because of its high reaction temperature, catalysts can easily inactivate.
    该重排工艺副产大量的硫酸铵，成本高，存在严重的设备腐蚀问题。气相Beckmann重排能避免硫酸铵的形成，但反应温度较高，导致催化剂容易积碳、失活。

Beckmann 单语例句

1. Beckmann called on the Beijing municipal government to levy road fees to discourage people from crowding the streets.
2. Beckmann struck a nostalgic note over the many traditional courtyard homes that have been razed to make way for skyscrapers.
3. US economist Martin Beckmann has impressed his Chinese colleagues not only with his professionalism, but also his lifelong passion for the discipline.

Beckmann