查询词典 benzene

The harmful gas such as formaldehyde, benzene, ammonia, TVOC still has bad smell, bacterium to wait with oxyhydrogen freedom radical reacts, be decomposed immediately hurtless carbon dioxide and water.

甲醛、苯、氨、TVOC等有害气体还有臭气、细菌等与氢氧自由基反应，马上被分解成无害的二氧化碳和水。

The plant will produce 814,000 tons of paraxylene per year and 210,000 tons of benzene.

工厂每年将生产81.4万吨对二甲苯和21万吨苯。

Paraxylene is used in the production of polyester fibers and plastic bottles. Benzene is an industrial chemical used to produce a wide range of plastics, detergents and other chemicals.

生产的对二甲苯用于聚脂光纤和塑料瓶，苯则用于工业上生产大范围的塑料、清洁剂和其它化学用品。

The present paper take the purine synonym kui zuo lin as a parent nucleus, separately in its 4 and 7 introduction structure diverse substituted benzene amino and the flexible side chain, designed a series of 4- substitution anilino-- 6- methoxy - 7-(2- hydroxyl to substitute for third oxygen radical) kui zuo lin a kind of compound.

本论文以嘌呤类似物喹唑啉为母核，分别在其4位和7位引入结构多样的取代苯氨基和柔性侧链，设计了一系列4-取代苯胺基-6-甲氧基-7-(2-羟基取代丙氧基)喹唑啉类化合物。

Methods: In this paper, a quinazoline purine analogues for the parent nucleus, respectively, and four of its seven introduced to replace the structure of diverse and flexible side-chain amino-benzene, design a series of 4 - to replace the aniline-based -6 - methoxy --7 -(2 - hydroxy replace C oxy) quinazoline compounds.

目的：通过各种化学合成方法完成目标化合物4--6-甲氧基-7-(2-羟基取代丙氧基)喹唑啉的合成并对目标化合物进行结构修饰，以期获得高活性的表皮生长因子受体酪氨酸激酶抑制剂。

PECH based PUs showed higher phase separation than that of PPG base PUs owing to that the -Cl groups in PECH reduced the flexibility of molecule chain and hindered the formation of hydrogen bonds between ether groups in soft segments and -NH groups in hard segments. As a result, PECH based PUs have lower free volume content, diffusion coefficient and equilibrium adsorption of CO〓, benzene and ethanol through them than through PPG based PUs.

聚环氧氯丙烷醚聚氨酯的氯基降低了链段柔性，妨碍了软段中醚基与硬段中氨基的氢键作用，导致其相分离程度较聚环氧丙烷醚聚氨酯大，并使CO〓、苯和乙醇蒸汽在聚环氧氯丙烷醚聚氨酯中的渗透系数和扩散系数较聚环氧丙烷醚聚氨酯小，而偏离费克扩散的程度大。

Over the vanadium pentoxide catalyst the kinetics of oxidation of benzene is studied.

在所研制的催化剂上研究了苯氧化反应的动力学。

Mission:"equality and mutual benefit, reputation first, unity and cooperation and friendship between the long-term" supply products: ethylenediamine; diethylamide; triethylamine; Diethylenetriamine; three ethylene diamine; three ethylene amines 40; 40 Five ethylene amines; five ethylene amines 6; caprolactam; DMF; allyl amine; N, N dimethylaniline; propylamine; are butylamine; are TOA; 3 Poly Cyanamide; 1,2 c diamine; ethanolamine; diethanolamine, triethanolamine; potassium iodide, potassium hydroxide, potassium permanganate, toluene, xylene, toluene of chlorine ; Acetone, butanone; acetylacetone; ethyl acetate, butyl acetate; Y-butyrolactone; DMC; acetyl of methyl acetate; Sanfu acetyl acid; Sanfu acetyl B Ethyl; methanol, ethanol, isopropanol; propylene glycol; glycerol; propargyl alcohol; 1.3 propylene glycol; xylitol; acetic acid; have acid; mercaptoacetic acid; vary Bitterness; adipic acid; trifluoroacetic acid; oxalic acid, the amino acid; o-amygdalin acid; DL-Acid; anhydrous piperazine; six non-piperazine, furfural, castor oil, ethylene Aldehyde; glutaraldehyde, multi-POM; isopropyl ether; anisole; tetrahydropyrrole; pure pyridine; 1.2 dichloroethane; methylene chloride, chloroform, carbon tetrachloride; hydrazine hydrate; Nonylphenol;-m-cresol; Se phenol; phenol; the tert-butyl phenol; Titanium Dioxide; iron; full Tangfen; Bisphenol A; azo two different nitrile; sodium azide; sodium carbonate ; Sodium chloride; iron oxide; cuprous chloride; thionyl chloride; D4; sodium bicarbonate; ammonia, potassium chloride; anhydrous sodium sulphite; ammonium persulfate; glycol Dingmi; B Glycol ether; calcium chloride; cyclohexanone; cyclohexane, methyl tertiary butyl ether, potassium carbonate, ferric chloride, potassium nitrate; Linsuansanna; zinc oxide; sodium nitrite; antimony oxide; Tartrate; OP-10; TX-10; tablets base; AES; sodium benzoate, sodium citrate; partial sodium silicate, sodium perborate, a sodium carbonate, sodium benzene; Asia sodium chlorate; Wuluo Care products; urea; hydrochloric acid, sulfuric acid, lactic acid; amino acid, hydrogen peroxide, ammonium bicarbonate

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The detection limit was 10 times better than the conventional SPME method. Under the optimized analytical conditions, aqueous samples of trichloroethylene/perchloroethylene (20 μg/L) and benzene/toluene (10 μg/L) were analyzed. The δ13C fractionation compared to pure-phase and headspace analysis was less than 0.5‰.

在优化的条件下，对20 μg/L的三氯乙烯/四氯乙烯和10 μg/L的苯/甲苯水溶液进行了单体碳同位素分析，相比于纯溶剂碳同位素值，顶空同位素分析误差不超过0.5‰，而样本标准偏差为0.3‰。

As when Perrier water was discovered to contain traces of benzene in 1990, or when Bridgestone Firestone faced claims in 2000 that some of its tyres had caused deadly crashes, the first step on the road to recovery is to withdraw the product from the market.

当黎水在1990年被查出含有苯，2000年凡是通面临指控说他的轮胎是导致重大撞车事故的原因。它所做的第一步是从市场撤下产品。

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。