查询词典 benzene

Also, ethanol is an octane enhancer, which can reduce emissions of cancer causing benzene and butadiene, by more than fifty percent.

除此之外，乙醇还可以增加燃料的辛烷值，从而可以减少50%以上的由于燃烧不完全而产生的有害物质的排放。

Working condition of GC system was established perfectly. With the internal standard of butanone, volumetric concentration of benzene was calculated by the calibration curve.

该方法确定了最佳阀切换反吹时间和操作条件，以丁酮为内标物，通过建立苯的校正曲线定量计算样品中苯的体积浓度。

Methods: Based on national standard, detected n-hexane, benzene, toluene, dimethylbenzene, ethyl acetate, butyl acetate and butanone in 450 factories.

根据中华人民共和国国家标准，对昆山市的450家接触正己烷、苯、甲苯、二甲苯、乙酸乙酯、乙酸丁酯、丁酮7种有机物的企业车间空气进行采样检测。

The benzene (or 80% of the butene) and the excess air in a fluidized bed or fixed-bed reactor for oxidation reaction of maleic anhydride was absorbed into the cycle of acid maleic acid.

将苯（或80%的丁烯）与过量空气在流化床或固定床反应器中进行氧化反应生成顺丁烯二酸酐，被循环的酸液吸收成顺丁烯二酸。

Maleic Anhydride is important organic raw material and the third biggest acid anhydride next to benzene anhydride and acid anhydride. In recent years, Maleic Anhydride is esterified and hydrogenised under pressure to make 1,4- butanediol butylene glycol, and it is also hydrogenised to tetrahydrofuran, which enables Maleic Anhydride to become the raw material for producing high-value-added products and to be more widely applied.

顺酐是重要的基本有机原料，也是世界上仅次于酸酐和苯酐的第三大酸酐，近年来，顺酐脂化低压加氢制1.4-丁二醇和顺酐加氢制四氢呋喃技术的开发成功，是顺酐成为生产高附加值产品的原料，应用领域有了更进一步的拓展。

Mainly engaged in: Hydrogen-imide hydrochloride, o-chlorophenyl cyclopentanone, 3.4 dimethoxy ethyl benzene, butyn single potassium acid, potassium ethyl malonyl, Ding amide, amide isobutyraldehyde , allyl chloroacetate, isopropyl chloroacetate Benzyl aluminum, cyclopentene, cyanide-o-chlorophenyl, o-methyl chloride, sulfuric acid chloride, p-chlorophenol, imidazole, Pinacolone, one chlorine Pinacolone.

主要经营：盐酸氢亚胺、邻氯苯基环戊酮、3.4二甲氧基苯乙酯、丁炔二酸单钾盐、丙二酸单乙酯钾盐、丁酰胺、异丁酰胺、氯乙酸烯丙酯、氯乙酸苄酯异丙醇铝、环戊烯、邻氯苯氰、邻氯苯甲酯氯、硫酸氯、对氯苯酚、咪唑、频呐酮、一氯频呐酮。

In a static photocatalytic reactor,the gas-phase adsorption and photocatalytic degradation of benzene and butyraldehyde over the two photocatalysts were studied,and the intermediates and products were detected by gas chromatography.

利用溶胶-凝胶并水热处理法制备了TiO2光催化剂和TiO2/AC复合光催化剂，在静态光催化反应器中研究了苯和丁醛的气相吸附和光催化降解，利气相色谱分析确定了生成的中间体。

Exhibit manufactures: Heat preservation system of thin plasterer polybenzene board; Heat preservation system of polymer expand vitrification micro-bead ; Heat preservation grit and slurry system made from glue powder and poly benzene grain; Spot epispastic attemperator, Heat preservation of floor and roof, waterproof grit and slurry, heat preservation ceramic tile felt grit and slurry, calking material, soft water－prof greasy, felt grit and slurry blended gas block, render plasterer blended gas block grit and slurry, level ground grit and slurry and other series products.

参展产品：薄抹灰板、聚合物膨胀玻化微珠、胶粉聚苯颗粒、聚氨酯等墙体、楼板及屋面保温体系；防水砂浆、瓷砖粘结砂浆、填缝剂、柔性防水腻子、加气块粘结砂浆、加气块粉刷抹灰砂浆、地坪砂浆等系列产品。

Canonical ensemble Monte Carlo simulations have been carried out to get the chemical potentials of the mixture of nitrogen and benzene by the Widom test particle method.

用正则系综测试粒子MonteCarlo方法模拟常温下空气及其污染物微量有机物的混合物中各组分的化学势。

The results showed that new-type solid ferric potassium alum was a good catalyst for the synthesis of ethyl decanoate and the optimum conditions were as follows: molar ratio of acid to alcohol was 1∶2, the use level of catalyst was 0.6 g/0.05 mol capric acid, water-taking reagent benzene was...

结果表明，新型固体酸铁钾矾是合成癸酸乙酯的良好催化剂，在酸醇物质的量比为1∶2，催化剂用量为0.6g(0.05mol癸酸)，带水剂苯为15mL，反应时间为2.5h的条件下，癸酸乙酯的酯化率可达98%。

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。