查询词典 butyl

BC-DH2004 catalyst was used in dehydrogenation of sec-butyl alcoholto prepare methyl ethyl ketone.

采用BC-DH2004催化剂进行仲丁醇脱氢合成甲乙酮的研究。

Catalyst ; sec-butyl alcohol ; methyl ethyl ketone ; dehydrogenation ; BC-DH2004 catalyst

催化剂；仲丁醇；甲乙酮；脱氢； BC-DH2004催化剂

Alcohols, ketones, esters, alcohols, ethers common media are methanol, ethanol, ethylene glycol, propanol, etc., ketones medium with acetone, methyl ethyl ketone, etc., there are a variety of methyl esters of medium, ethyl ester, ether medium with ether, ethyl ether, butyl ether, etc., they basically did not corrosive materials can be used for the specific use of the property should also be under the media and related requirements to make reasonable choices.

醇类、酮类、酯类、醚类常见的醇类介质有甲醇、乙醇、乙二醇、丙醇等，酮类介质有丙酮、丁酮等，酯类介质有各种甲酯、乙酯等，醚类介质有甲醚、乙醚、丁醚等，它们基本没有腐蚀性，常用材料均可适用，具体选用时还应根据介质的属性和相关要求做出合理选择。

The experimental results show that the composite emulsion of nitrocellulose -alkyd resin acrylate, which is prepared by modifying the nitrocellulose with non -drying or alkyd resin, methyl methacrylate and butyl acrylate monomer under the optimized experimental conditions have good stability and excellent performance.

实验结果表明，以不干性油醇酸树脂、甲基丙烯酸甲酯和丙烯酸丁酯单体为主要原料，在优化的实验条件下对硝基纤维素进行改性，可制得稳定性好的硝化纤维素-醇酸树脂-丙烯酸酯复合乳液。

PKA activators such as cAMP, 8 - Br -cAMP or phosphodiesterase inhibitor isomethyl butyl xanthine or purified PKA catalytic subunit all can inhibit germinal vesicle breakdown and meiotic maturation in mouse oocytes, also in Xenopus oocytes.

以小鼠卵母细胞为实验对象，给予PKA激动剂cAMP、8-Br-cAMP或磷酸二酯酶抑制剂IMBX均可抑制小鼠卵母细胞的胚泡破裂及减数分裂成熟。

The affection of the ratio of butyl alcohol and acrylic acid, reaction time, amount of the catalysis was discussed, and reusability of catalysis was discussed, too.

探讨了醇酸摩尔比，反应时间，催化剂用量对反应的影响，并考察了催化剂的重复使用性能。

Key words:Normal butyl alcohol extraction; Ames; Fluctuation test; Sensitivity

因此这些方法是较好的化学物质诱变活性评价的试验方法。

Butyl alcohol was used as internal standard for quantitation.

采用内标法定量，以正丁醇作内标。

The construction tools must be dipped in the solution mixed with xylene and butyl alcohol to clean the surface coating of the tools, and to avoid damage of the equipments.

I、施工器具应浸泡在二甲苯-丁醇溶液中，以清除沾在器具上的涂料，防止损坏设备。

Electrocatalytic oxidation is further carried out in the presence of the ·OH radical scavenger tert -butyl alcohol, which indicates that both direct and indirect oxidation are responsible for the degradation of phenol.

加入·OH清除剂叔丁醇的研究表明，本体系中苯酚的电催化氧化是由直接氧化和间接氧化的协同作用共同去除。

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。