查询词典 reagents

Guild experience, once accrued at the end of each week, will be converted into guild currency, which can be used to buy a myriad of items, including reagents, tabards, pets, profession recipes, heirlooms, and Guild Talent points.

公会经验值，每个周末统计一次，会转换成公会货币，这种货币可以被用来购买大量的物品。其中包括药剂、战袍、宠物、专业配方、传家宝以及公会天赋点数。

Pure methyl esters were prepared using common oil plant seeds and the fatty acid composition of the achieved oil was measured by capillary column chromatography.The kinds and dosage of reagents for fast preparation of the methyl esters were investigated and the chromatographic conditions using two kinds of capillary columns were optimized.

本研究通过参考文献，直接使用常见油料植物种子制备纯油甲酯进行分析，探讨了快速制备甲酯的试剂选择及用量，强极性和弱极性的两种不同类型毛细管柱的最佳色谱分析条件，并将测定的主要脂肪酸含量与国家标准进行比较，结果较为一致，而且平行测定的相对标准偏差表明方法有较好的精密度和重复性。

This text briefly introduced the background of the enhanced oil recovery, the existing methods of oil-driven agent for oil recovery and their mechanization, summery kinds of oil-driven reagents, their development trend in recent years and some problems that should be resolved as soon as possible were also discussed.

本文主要介绍了三次采油技术产生的背景，现有的主要驱油方法及其驱油机理，总结了各类三次驱油中主要的驱油剂，并对未来的三次采油技术发展趋势和亟待解决的问题进行了展望。

The extraction of ions in the form of chelate compounds, inorganic salts solvated by neutral reagents, and ion-pair compounds is considered.

离子可以以鳌合化合物、中性试剂溶剂化的无机盐和离子对化合物的形式萃取。

I plant mainly produces "úcard" industrial furnace, laboratory furnace, electric oven thermostat, such as blast more than 200 varieties of electric equipment, and laboratory equipment, reagents and glass.

我厂主要生产&鲁龙牌&工业电炉、实验电炉、电热恒温鼓风干燥箱等电热设备二百多个品种，及化验设备，化玻试剂。

In this dissertation, preparation of polysubstituted ethene and heterocyclic compounds based on 2-hydroxyalkyl phenyl selenides andα-phenylselenopropionic acid reagents were further investigated as follow: Firstly, O-ethyl-O-vinyl phosphonates were prepared in a one-pot, two-step transformation by Mitsunobu reaction of 2-hydroxyalkyl phenyl selenides with monoethyl esters of phosphonic acid in the presence of diethyl azodicarboxylate and triphenyl phosphine (PPh3) followed by oxidation-eliminatio...

中文摘要：本文主要进一步探索了2-羟基烷基苯基硒醚、α-苯硒基丙酸试剂在制备多取代乙烯和杂环化合物反应中的应用，具体研究内容和结果如下：一、在偶氮二羧酸乙酯和三苯膦(PPh3)存在下，苯基-2-羟基烷基硒醚和O-乙基膦酸单酯发生Mitsunobu反应，无需分离和纯化反应中间体，直接使用30 %的双氧水进行氧化-消除反应，提供了&两步、一锅&合成O-乙基-O-乙烯基膦酸酯的新方法，该方法反应条件温和，操作简便，产物收率良好(76-82 %)。

Chapter 2 Some novel Aza-Wittig regents were synthesized under mild conditions, their reaction performance was studied, and the reaction mechanism of these Aza-Wittig reagents with phenyl isocyanate was speculated.

第二章主要研究了在温和条件下一些新型的Aza-Wittig试剂的合成及其反应性能，并对新型的Aza-Wittig试剂与异氰酸苯酯的反应机理进行了推测。

Now that we have all the reagents, I can prepare the mixture.

现在我们获得所有的反应物了，我可以准备合剂了。

Can also be used as laboratory reagents.

也可以作为实验室的试剂。

In chapter 2,reagents,instruments and experimental methods used in this thesis were described.

在第二章中，介绍了本论文实验过程中所用的仪器、试剂、实验方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。