乙烷

Ethylene oxide, composite baldheads, quaternary ammonium compound category, surfactant, the activity factor, the chelating agent.

环氧乙烷、复合醛类、复合季铵盐类、表面活性剂、活性因子、螯合剂。

Ethylene oxide, composite aldehydes, quaternary ammonium salt-type compound, surfactant, activity factor, chelator.

环氧乙烷、复合醛类、复合季铵盐类、表面活性剂、活性因子、螯合剂。

Ethylene oxide, chlorine dioxide, the compound aldehydes, quaternary ammonium compound category, surfactant, the activity factor, spices.

环氧乙烷、二氧化氯、复合醛类、复合季铵盐类、表面活性剂、活性因子、香料。

Quaternary ammonium compound category, chlorine dioxide, ethylene oxide, composite aldehydes, chelating agent, surfactant, the activity factor.

复合季铵盐类、二氧化氯、环氧乙烷、复合醛类、螯合剂、表面活性剂、活性因子。

Ethylene oxide, chlorine dioxide, composite aldehydes, quaternary ammonium salt-type compound, surfactant, activity factor, chelator.

环氧乙烷、二氧化氯、复合醛类、复合季铵盐类、表面活性剂、活性因子、螯合剂。

Ethylene oxide, chlorine dioxide, the compound aldehydes, quaternary ammonium compound category, surfactant, the activity factor, the chelating agent.

环氧乙烷、二氧化氯、复合醛类、复合季铵盐类、表面活性剂、活性因子、螯合剂。

Finally, N ethey[3,3 dimethyl spiralindoline naphthoxazine]was synthesized by the addition of 1 nitroso 2 naphthol also,the photochromic mechanism of the substance and its photochromic phenomenon in ethanol were studied.

报道了以苯肼和 3 甲基 2 丁酮为原料首先合成 2 ，3 ，3 三甲基吲哚，吲哚再与碘乙烷亲核取代，碱化得费舍尔碱，最后与 1 亚硝基 2 萘酚作用合成N 乙基 [3 ，3 二甲基螺吲哚啉萘并恶嗪 ]的全过程，并研究了该物质的变色机理以及在乙醇溶剂中的光致变色现

Ethane＞ toluene＞1, 3, 5-trimethylbenzene＞methyl isobutyl ketone＞1, 4-Dioxane＞isoprene＞ 1, 2, 4-trimethylbenzene＞cyclohexane＞1, 3-Butadiene＞methyl butyl ketone were the most reactive VOC species in PRD.

化学活性排名前十位的化合物为：乙烯＞甲苯＞1，3，5-三甲苯＞甲基异丁基酮＞1，4-环氧乙烷＞异戊二烯＞1，2，4-三甲苯＞环己烷＞1，3-丁二烯＞甲基丁基酮。

In the course of educational experiment on the synthesis of non-ionic surfactant, in order to reduce the depletion on ethylene oxide and save experimental cost, an educational experimental device with the function of enduring highpressure and little reaction mass was constructed by refitting a 250mL high-pressure reactor. In order to verify the function of the experimental device, lauryl alcohol polyoxyethylene ether was synthesized by it.

在非离子表面活性剂的合成教学实验中，为了减少环氧乙烷的消耗，节约实验成本，对250mL的高压反应釜进行了改造，筹建了一套耐高压反应物料量少的教学实验装置，并用此装置合成了十二醇聚氧乙烯醚，以验证此装置的性能。

Objective］ The research aimed to improve the comprehensive surface performance of lauryl polyoxyethylene ether (AEO3) by means of modification.［Method］ AEO3 was synthesized from lauryl alcohol and epoxy ethane, which reacted with liquid chloroacetic acid to produce modified AEC.

［目的］对月桂醇聚氧乙烯醚（AEO3）进行改性来提高它的综合表面性能［方法］用月桂醇、环氧乙烷合成月桂醇聚氧乙烯醚（AEO3），再用AEO3与液体氯乙酸反应改性合成AEC。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。