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TOAB (tetra-n-octyl-ammonium bromide) serves as a catalyst initiating the reaction between dodecanethiol and Cux(x-2). When it is absent, nanoparticles were not formed and white floccules were observed in the bottom of toluene phase .

丁基溴化铵起到催化剂的作用,在它存在的时候,十二烷基硫醇和铜母体的氧化还原反应优先发生。

Comparision on antibacterial activity of ethanol extracts of clove bud and clove fruit in vitro;2. The results showed that ethanol extracts from C.

法测定了油茶叶乙醇提取物的抗氧化活性,并与芦丁、二丁基羟基甲苯进行了比较,在波长517nm、反应时间40min的条件下测定了DPPH。

In this paper, an experimental study on combustion and emission characteristics of homogenous charge compression ignition combustion engines using n-heptane combined with methyl tertiarybutyl ether was conducted.

研究了含甲基叔丁基醚的正庚烷HCCI燃烧特性和排放影响因素。

For high octane number fuels, it was found that when an additive named as DTBP is added to RON90 and iso-octane, the HCCI operation ranges could remarkably expand to lower temperature and lower engine load.

针对高辛烷值燃料不容易压燃的缺点,本文在RON90燃料和异辛烷中加入一定比例的过氧化二叔丁基,达到了控制高辛烷值燃料着火时刻、提高燃烧效率、降低排放的目的。

Compound lead salt stabilizer to further enhance the thermal stability in order to reduce the amount of resin in the unit: Organic tin heat stabilizer dibutyltin in greater toxicity, are not suitable for plastic heat stabilizer; Mercaptans by organotin anti - Cu-poor, it is not appropriate in the wire, cable products, but no contact for copper products is no problem; lead salt-type heat stabilizer in most industrial countries are being banned or restricted.

复合铅盐稳定剂应进一步提升热稳定性能,以减少在树脂中的单位用量:有机锡热稳定剂中的二丁基锡毒性较大,不适宜用作塑料热稳定剂;硫醇类有机锡因抗铜性差,不适宜在电线、电缆制品中使用,但用于不接触铜的制品是没有问题的;铅盐类热稳定剂在大多数工业发达国家正在被禁用或限用。

Oil in the redeployment of high-octane fuel components, blending the best choice programs, such as redeployment isooctane, cumene, alkyl benzene, methyl tert-butyl ether, alcohol burning Materials.

在油品中调入高辛烷值燃料的组分,选择最佳调合方案,如调入异辛烷、异丙苯、烷基苯、甲基叔丁基醚、醇类燃料等。

Objective: To establish a for determination of methyl tert-butyl ether in drinking water by purge-trap GC-MS.

目的:建立适用于水中甲基叔丁基醚的吹扫捕集GC-MS测定方法。

Objective: To establish a GC/MS analytical method for methyl tert-butyl ether in the workplace air.

目的:建立工作场所空气中甲基叔丁基醚测定方法。

The methyl tertiary-butyl ether is a kind of gasoline additive, have been used since the beginning of the eighties of the 20th century, still widely used in many countries now.

甲基叔丁基醚是一种20世纪80年代初开始广泛使用的汽油添加剂,现仍在许多国家得到广泛的应用。

The method is suitable for analyzing the methyl tert-butyl ether in drinking water.

此方法能够用于分析水中甲基叔丁基醚。

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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。