查询词典 hydrogen

An organic compound in which the hydrogen of the hydroxyl group of methyl alcohol is replaced by a metal.

甲基化产物一种有机合成物，是甲醇的羟基中的氢被一种金属取代

The results showed that the addition of alcoholate increased the elution recovery of phenolic acids on resins in supercritical CO2. The infrared spectroscopy was used to study the interaction between solute and solvent molecules in supercritical fluid. The hydrogen bond between alcoholate entrainer and phenolic acid was the main factor to increase the ability of supercritical elution. The results appeared that salvianolic acids could be extracted by supercritical carbon dioxide with ethanol as entrainer.

结果表明：醇类夹带剂的加入能大大提高树脂上酚酸类化合物的超临界洗脱率；通过红外光谱技术研究了超临界流体中分子间的相互作用与超临界洗脱过程的关系，认为醇类夹带剂与酚酸类化合物的氢键作用是提高酚酸类化合物洗脱率的主要因素；以乙醇为夹带剂的超临界CO2洗脱可应用于丹参酚酸的提取。

The paper describes the application of titanium in electrode materials of nickel-hydrogen battery ,Li-ion battery ,solar battery ,alkaline zinc-manganese dioxide cell,lead-acid battery ,exploration and exploitation of oil and gas,geothermal energy,electric power industry and so on.

介绍了钛在镍氢电池负极材料、锂离子电池正负极材料、太阳能电池、碱性锌锰电池、铅酸蓄电池以及油气勘探开发、电力工业和地热开发中的应用。

In addition, movement of hydrogen ions into the cells as a consequence of potassium loss is partly responsible for the alkalosis.

此外，钾丢失的引起氢离子向细胞内转移，这也是碱中毒的其中一个原因。

In this dissertation, the stable radical cation salts ofphenothiazine and 10 - alkylphenothiazine alky=〓(〓 hexachloroantimonate,perchlorate and iodide were prepared by one- electron oxidationwith 2,2,6,6-tetramethyl - 4 -acetyloxypiperidine oxoammoniumhexachloroantimonate, perchloric acid/hydrogen peroxide andmolecular iodine respectively, and they were characteried by UV -Vis spectroscopy and ESR spectroscopy.

本文的主要内容有：吩噻嗪和10-烃基吩噻嗪分别被碘、高氯酸／过氧化氢，2，2，6，6-四甲基-4-乙酰氧基哌啶氧铵六氯锑酸盐氧化为相应的正离子自由基碘盐、高氯酸盐、六氯锑酸盐，并用UV-Vis光谱和ESR波谱进行了鉴定和研究。

The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.

苯的同源物是于苯环中一个或多个氢原子的位置上以烷基取代的化合物。

The charge-remote fragmentation of protonated alkylamines and the fragmentation of alkylamine ions can be explaned by using the radical mechanism and hydrogen abstraction of intramolecule, respectively.

自由基机理可以解释质子化脂肪胺分子的远电荷反应。分子内氢抽取可以解释脂肪胺分子离子的碎裂反应。

Process comprising contacting initiator with alkylene oxide in the presence of hydrogen fluoride and a double metal cyanide complex catalyst.

一种方法，其包括说明书摘要在氟化氢和双金属氰化物复合催化剂存在下使引发剂与亚烷基氧化物接触。

Silsesquioxanes are a large branch of organic-inorganic silicon-containing compounds. They can be represented as RSiO_(3/2_n, where R can be hydrogen or any alkyl, alkylene, aryl, arylene groups, or organo-functional derivatives of them.

倍半硅氧烷是指所有符合经验公式RSiO_(1.5)(这里R代表氢或任何烷基、烯基、芳基或有机功能取代的烷基、烯基、芳基)的有机无机化合物。

According to the performance and technology, many of them, such as Energy Partition plant invented and equipped by SPA and Alkyne Removement by Hydrogen Addition Plant which was the joint invention of both SPA and East China University of Science and Technology, etc.

其中，我校自行研发的"能源隔断装置"和与华东理工大学联合研发的"加氢脱炔装置"等的性能和技术含量，在国内职业院校中已处于领先地位。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。