环烷

It is reported that the fifth-generation energy-saving Rongsheng star refrigerator, use of VIP vacuum insulation panels, ultra-efficient green fluorine-free compressor, double F-type high-performance wire-tube evaporator, and more energy-efficient dual airbag door closed, a new generation of cyclopentane composite foam technology and other energy-saving Multi-leading technology to ensure excellent insulation refrigerator insulation performance, power consumption of only 0.25 days, the volume for the same paragraph of ordinary refrigerator 1 / 3, is currently on the market to buy the lowest power consumption refrigerator, can be called "energy champion."

据介绍，容声第五代节能明星冰箱，采用了VIP真空隔热板、超高效环保无氟压缩机、双层F型高效丝管式蒸发器、多气囊节能双门封、新一代环戊烷复合发泡技术等多重领先的节能技术，保证冰箱极佳的绝热保温性能，日耗电量仅0.25度，为同容积段普通冰箱的1/3，是目前市场上能购买到的耗电量最低的冰箱，堪称"节能冠军"。

METHODS: We measured the effect of various lidocaine infusionson the MAC of cyclopropane, halothane, isoflurane, and o-difluorobenzenein rats.

我们测定不同的利多卡因输注对于大鼠环丙烷、氟烷、异氟醚和邻二氟苯 MAC 的影响。

If, relative to isoflurane, cyclopropane minimally increases GABA-induced chloride currents at any GABAA receptor subtype, the present data for MAC are consistent with the notion that GABAA receptors do not mediate the immobility produced by inhaled anesthetics.

如果，相对於异氟烷而言，环丙烷在任何γ-氨基丁酸 A 受体的亚体上都是极微弱地增加γ-氨基丁酸介导氯电子流的作用，那麼现在关於 MAC 的资料就和γ-氨基丁酸 A 受体不是吸入性麻醉药产生的抑制作用的介导者这一概念一致。

In our research on study chemical reaction of active methylene compounds and brom-acetophenone. Because of brom-acetophenone is compound that contain carbonyl and halogen ,which will take place electrophilic substitution and nucleophilic addition. When active methylene compounds are ethyl acetoacetate and β-diketone, controlling reaction condition, we have found that mono-substitution's production and di-substitution's. production is isolated; active methylene compounds are acetoacetanilide and acetoacetanilide derivate, pyrrolidin-2-one derivants were obtained by substitution and close-ring reaction .but there is no report about it.

本文是让活泼亚甲基类化合物与溴代苯乙酮发生化学反应，由于溴代苯乙酮是含有羰基的卤代烃结构，它可以发生亲电取代和亲核加成反应，当活泼亚甲基类化合物为乙酰乙酸乙酯和β-二酮时，控制反应条件可以发生单取代和双取代两种产物；当活泼亚甲基类化合物为乙酰乙酰芳胺类化合物来反应时，溴代苯乙酮中的羰基与氨基会发生分子内的关环反应生成吡咯烷-2-酮衍生物，这在以前的研究中是没有发现的。

Catalysis of sulfuric acid has been investigated in the preparation of dibromoalkane by epoxy compound and aliphatic diol .

结果表明：浓硫酸的用量对环氧化合物以及脂肪二元醇合成二溴代烷的收率有很大的影响

FDA has stated that the 1,4 dioxane levels found in their monitoring of personal care products and cosmetics "do not present a hazard to consumers."

FDA已经表示1，4 –二氧杂环己烷存在于在其监控范围内的化妆品和个人护理用品的水平"对消费者不构成危害"。

The allegations about the presence of 1,4 dioxane and formaldehyde in personal care products were made in a report to be released March 12, 2009, by the Campaign for Safe Cosmetics.

有关宣称个人护理产品中存在1，4 –二氧杂环己烷和甲醛成分的指控源于安全化妆品运动组织于2009年3月12日发布的一份报告。

The extremely low levels of 1,4 dioxane reported by CSC likely reflect efforts by manufacturers to control the levels of this contaminant through proper selection of raw materials and quality control of finished products.

在报告中提到的1，4 –二氧杂环己烷实际上被检出处在极低水平，事实上正反映了厂商为了控制该残留物在成品中的含量，在原料选择和成品质量控制上所做出的积极努力。

The main photoproducts in dioxane and hexane are 2-chloro benzamide and 4-chlorophenyl isocyanate.

在二氧六环及正己烷中的主要光解产物为邻氯苯甲酰胺和对氯苯基异氰酸酯。

The reaction of polyfluoroalkyl iodides with 4-pentenoic acids initiated by sodium dithionite was realized to give polyfluoroalkyl substituted lactones.

我们研究了多氟烷基碘代烷与4-戊烯酸类化合物等在连二亚硫酸钠引发下的反应，得到了氟烷基取代的内酯化合物，我们将该反应称为氟烷基化内酯化反应；并建立了一个利用该反应合成含氟内酯的新方法，首次利用氟烷基化内酯化反应进行高立体选择性双环含氟内酯及手性含氟内酯等的合成，已合成含氟内酯新化合物50余种。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失