甲基异丁基酮

These studies indicate that the boron fluoride with nitromethane or acetone system with higher separation factor is superior to the anisole system used currently,but a more detailed study is.

采用苯甲醚、硝基甲烷、丙酮、甲基异丁基甲酮4种络合剂分别与三氟化硼合成出了4种络合物体系。

To improve the extraction of gold from electronic waste, statistical methods were used to analyze the impact of different factors affecting the extraction of Au using methyl isobutyl ketone as solvent.

以电子废料中的金为研究对象，用统计学方法对甲基异丁基甲酮萃取电子废料中金的影响因素进行了探讨和分析。

The catalytic performance was studied using the hydrogenation of methyl isobutyl ketone as the probe reaction.

以甲基异丁基甲酮加氢制备甲基异丁基甲醇为探针反应，考察了所合成材料的加氢催化性能。

Only Cr reacts with DDTC to form a 1: 3 complex which is then extracted with methyl isobutyl ketone and determined by flame atomic absorption spectroscopy.

本文拟定的方法是在pH-4条件下，用二乙胺硫代甲酸钠与甲基异丁基甲酮络合萃取铬，用原子吸收光谱法测定。

The nano ferric oxide powder was prepared by using methyl isobutyl ketone as extractant.

以轧钢皮粉为原料，利用甲基异丁基甲酮对铁的高萃取性采用萃取法制取高纯氧化铁红，探讨了萃取工艺对氧化铁收率的影响。

Results The mixing, loading and storing processes of the construction, might generate lots of occupational hazards, including toluene, dimethylbenzene, trimethylbenzene, isopropanol, butyl alcohol, propanol, methyl methacrylate, butyl acetate, methyl isobutyl ketone, methyl ethyl ketone, acetic ether, nitro-cotton, n-hexane, n-heptane, carbinol, ethanol, ethyl propionate, diisobutyl ketone, glycol ether, isoamyl acetate, 2,4-toluene diisocyanate, isophorone, noise, power frequency electric fields.

结果 该项目在混兑生产和装卸、仓储过程中，可能产生的职业病危害因素主要有甲苯、二甲苯、三甲苯、异丙醇、丁醇、丙醇、甲基丙烯酸甲酯、乙酸丁酯、甲基异丁基甲酮、丁酮、乙酸乙酯、硝化棉、正己烷、正庚烷、甲醇、乙醇、乙酸丙酯、二异丁基甲酮、乙二醇乙醚、乙酸异戊酯、2，4甲苯二异氰酸酯、异佛尔酮、噪声、工频电场。

Hydroesterification of tert-butyl alcohol with ethanol catalyzed by transition metal triphenylphosphine complexes were investigated in room temperature ionic liquids as reaction medium at 100-140℃ and 3-6MPa of CO.

首次在超强酸氯铝酸离子液体中实现了饱和烷烃的羰化反应。发现2，2，4-三甲基戊烷可直接与CO反应，产物叔丁基异丁基酮，叔丁基异丁烯基酮和3，3，5-三甲基环己酮。

We sold 2-butanone 8000T, acetone 6000T and methyl isobutyl ketone 5000T in last year. The well-known domestic enterprises and joint ventures are both our main partners. So we have a good market credit, we will not only meet client's demand for the product, but also formed a stable base for logistics and distribution.

本公司年销售丁酮8000T，丙酮6000T，甲基异丁基甲酮5000T，我们主要合作伙伴有合资企业及国内知名企业，具有良好的市场信誉，我们不仅满足客户的生产需求，而且逐渐形成一个稳定的物流配送基地。

We are the professional agents for storage and manage to imports and domestic produced organic chemical solvent 2-butanone, methyl isobutyl ketone, acetone.

储运。经营进口和国产有机化工溶剂丁酮，甲基异丁基甲酮，丙酮。

Acetone ; methyl isobutyl ketone ; base catalysis ; Aldol condensation

丙酮；甲基异丁基酮；碱性催化； Aldol缩合

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。