卤
- 与 卤 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The application results from fluorination showed microwave heating could accelerate chemical reactions markedly. The reaction time could be shortened 50% at least than that of conventional heating. The relationship between fluorinating agents\' structure and their activity was studied systematically. In addition, an anhydrous KF with higher activity was prepared by using expansion effect of microwave heating. As we known, solvents were very important to reaction. The comprehensive study showed some less polar aromatic solvents could be used as dipolar solvents. In addition, they had better effect than dipolar solvents in some occasions, such as fluorination of chlorobenzaldehydes and chlorinated diphenyl ketones etc. The primary applications of ionic liquids were also studied which indicated reactions with ionic liquids as solvents were more efficient and simple.
研究表明,微波是一种节能高效的加热方式,在微波作用下的卤素交换氟化反应具有反应速度快、转化率高、选择性好的优点,其反应时间可较常规加热缩短50%以上;同时也系统地研究了氟化剂种类及制备方式对其反应活性的影响,并利用微波加热的膨化作用制备出了一种活性较高的KF,其活性与喷雾干燥KF相差不大;溶剂对反应具有重要的作用,在此系统地研究了强极性非质子溶剂和中等极性非质子溶剂的应用情况,发现一些中等极性的非质子溶剂如硝基芳烃和氯代芳烃类溶剂在氯代苯甲醛类化合物的氟化反应中具有比强极性非质子溶剂更好的使用效果。
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The exterior gets some blingy garnishes – halogen bulbs up front and LED tails out back – which reduce power consumption by up to 88 percent over previous versions.
外观得到一些blingy菜-卤素灯泡前锋和LED尾巴了回来-这降低能耗达88比以前的版本。
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According to the Box-Benhnken design principle,the method of response surface method with 3 factors and 3 levels was used. The factors influencing the technological parameters were determined by means of regression analysis. Response surfaces were finally graphed with the yield as the response value. The synthesis conditions were optimized as follows:reaction reagent was NBS,stoichiometric proportion between NBS and anhydrovinblastine was 1.07; the dosage of TFA was 22 mL/L; reaction temperature was -68 ℃ and duration was 90 min.
在单因素实验基础上,根据Box-Benhnken实验设计原理,采用三因素三水平的响应面分析法,研究了各个因素及其交互作用后,得到了合成7′-Br-脱水长春碱的最佳工艺条件:以二氯甲烷为溶剂,采用NBS为溴代剂,其用量与底物的物质的量比为1.07∶1,TFA的加入量22 mL/L,在-68 ℃下反应90 min,终止反应后,得到卤代产物。
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ABSTRACT Nearly 3,800 halogenated compounds have been identified so far and many of which are important antibiotics.
迄今为止,已经发现了近3800种卤化物,其中很多是重要的抗生素。
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Objective: To develop a method to determine the twelve volatile halogenated hydrocarbons in drinking water.
目的:建立饮用水中12种挥发性卤代有机物的分析方法。
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However, if it is necessary to clean with halogenated cleaning agent, please contact our sales office.
如必须使用卤化清洗剂,请与我们销售部门联系。
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The boiling points of 6 halogenated propanes were predicted for reference and testing in the future.
对53种卤代丙烷的计算结果表明,沸点计算值与实验值的一致性令人满意,平均误差1.18%。
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L Output products include water, CO2 and halogen acids (in the case of halogenated waste treatment).
l 经处理产生的物质包括:水, CO2或卤素酸,它们再进入净化系统进行处理和冷却。
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It can be particularly used in situ remediation of groundwater and soil contaminated with halogenated organic compounds.
本文从修饰型纳米零价铁的合成方法、制备原理、降解效果、应用范围、降解机理、修饰因素的影响等几方面进行了分析,着重介绍了国内外运用修饰型纳米零价铁降解卤代有机物的研究成果和现状,讨论分析了该技术存在的问题,并对该技术的发展前景进行了展望。
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After halogenated butyl rubber, not only maintain the excellent performance of the original, but also further improve the general characteristics of butyl rubber.
丁基橡胶经卤化后,不仅保持了原有的优良性能,还进一步改进了普通丁基橡胶的特性。
- 推荐网络例句
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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.
Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。
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I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.
我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。
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The shamrock is the symbol of Ireland and of St.
三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。