查询词典 isobutyl-amnoacetic acid

The catalytic activity was affected by prepared condition through esterification reaction of acetic acid and isobutyl alcohol.

通过沉淀-浸渍法制备一系列S2O82-/ZrO2-SiO2固体超强酸催化剂，用乙酸和异丁醇的酯化反应研究了制备条件对催化剂活性的影响。

The kinetics of iridium catalyzed oxidation of isobutyl alcohol by cerium in aqueous sulphuric acid medium has been investigated by titrimetric technique in the temperature range of 25~40℃.

在酸性介质中用氧化还原滴定法研究了鈰离子在痕量铱离子催化作用下，於25~40℃区间氧化异丁醇的反应动力学。

Although the peptides had different structures, they typically shared a handful of chemical features, such as phyenyl, hydroxyl, carboxylic acid, and isobutyl groups.

虽然说肽类具有不同的结构，但是他们都共同具有一些简单的化学特征，比如苯酰基，羟基，羧基以及异丁基团。

Comparing with the traditional way of stronger sulfuric acid ,The catalyst has its advantage of more effective on the synthesis,the operation is more safer, does not corrode the equipments and does not pollute the environment,and the recovering operation is simple. So it can be called a green method on synthesis of isobutyl acetate.

该催化剂与传统浓硫酸法相比，催化效果更好，作更安全，对设备无腐蚀，对环境无污染，实现了催化剂的重复利用，并且回收作简单，重复利用率高产率好，达到绿色合成乙酸异丁酯的目的。

Ascorbic acid, ammoniun rhodanate and methyl isobutyl ketone are used to extract Mo form soil sample solution for the purpose of removing matrix interferences.

研完了水相酸度，各试剂用量，不同有机溶剂以及共存干扰离子对萃取和测定的影响，无须去掉水相直接测定有机相中的钼。

Contains: Deionised Water, Mineral Oil, Glycerine, Stearic Acid, Cetearyl Alcohol, Triethanolamine, Carbomer, Lanolin, Tocopherol Acetate, Fragrance, Propylene Glycol, Methyl Paraben, Ethyl Paraben, Butyl Paraben, Isobutyl Paraben, Propyl Paraben, Disodium EDTA.

成分：离子水，矿物油，甘油，硬脂酸油脂剂，棕榈醇乳化剂，三乙醇胺酸碱值调节剂，稳定乳化剂，绵羊油，维生素E，香料，丙烯甘醇保湿剂，甲基木精胶，乙酯，丁酯，尼泊金异丁酯，丙酯，稳定剂缓冲剂。

Methyl isobutyl ketone is a good origanic slovent and the advanced process for producing MIBK is one-step synthesis by gas-phase condensation and hydrogenation of acetone. In this process, the key technology is to develop the multi-fuctional catalyst, which has both the ability of hydrogenateon and condensation, as well as suitable acid-base sites.

甲基异丁基酮是一种优良的有机溶剂，先进的生产方法是丙酮气相缩合加氢一步法，该工艺关键的技术是开发高效的双功能催化剂，即催化剂同时具有缩合、加氢以及适宜的酸、碱性质。

After the digestion of the samples of the effort of the mixed acid, in the condition of pH=2~2.8, the lead in the sample solution and the added pyrrolidine a two-ammonium thiosulfate can come into being a metal complex. With A methyl isobutyl ketone extraction, the lead complexes can be divided from the water phase.

采用混合酸对样品进行消化处理后，在pH2~2.8时，样品溶液中铅与加入的吡咯烷二硫代氨基甲酸铵形成金属络合物，用甲基异丁基甲酮萃取，使铅络合物与水相分开。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。