本文介绍了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、L- 薄荷酯和叔丁酯。
Synthesis of sterically hindered dicyclohexylmethyl, L menthyl and tert butyl diazoacetate by diazo transfer was described on this paper.
芳环的存在可以增加与其相连的仲碳和叔碳的反应活性。
The reactivity of tertiary and secondary C connected to the arene ring was increased obviously.
丙碳酸四氯乙烯加热的和叔胺或酰胺催化分解金额相同。
The tetrachloroethylene carbonate is decomposed by heating same with a catalytic amount of a tertiary amine or amide.
在稳定化米糠和水的悬浮液中加入硫酸铵和叔丁醇可以形成三相。
Three phases were formed by adding ammonium sulphate and t-butanol into the slurry of rice bran and water.
在实验过程中筛选出几种酚类化合物和叔丁基含氧化合物等作为汽油抗爆添加剂。
Some of phenol compound and oxygen containing compounds with tertiary butyl group were screened to use as gasoline antiknock additives.
比较甲醇钠、乙醇钠、异丙醇钠和叔丁醇钠催化活性，叔丁醇钠为最佳的催化剂。
Compared with the activity of sodium methoxide, sodium ethoxide, sodium isopropyl, sodium tert-butoxide, the best base catalyst was sodium tert-butoxide.
这些材料包括各种丙烯酸单体和低聚物、伯胺、仲胺和叔胺、酸官能单体和低聚物、硅酮、蜡和弹性体等。
These materials include a variety of acrylic monomers and oligomers, primary, secondary and tertiary amines, acid-functional monomers and oligomers, silicones, waxes and elastomers, among others.
目前铅和甲基叔丁基醚(MTBE)等添加剂被叫停，取而代之的是在汽油中添加少量酒精，这样提升辛烷水平能防止负载中引擎产生爆震。
With lead and MTBE additives now phased out, spiking petrol with a small amount of ethanol raises its octane level enough to prevent the engine from "knocking" under load.
有关在单纯性疱疹和艾滋病治疗中使用二叔丁基对甲酚(BHT)的研究正在进行中。
Research is underway concerning the use of BHT in the treatment of herpes simplex and AIDS.
二叔丁基对甲酚(BHT)还能防止脂肪的氧化酸败，被用来维持食品的气味、颜色和味道。
BHT also prevents oxidative rancidity of fats. It is used to preserve food odor, color, and flavor.
有证据证明，某些人可能难以代谢叔丁基羟基茴香醚(BHA)和二叔丁基对甲酚(BHT)，导致健康和行为改变。
There is evidence that certain persons may have difficulty metabolizing BHA and BHT, resulting in health and behavior changes.
如蒙大拿州的参议员乔恩·泰斯特和北卡州的卫叔勒议员就吹嘘自己长期拥有枪支的生涯并表明立场支持第二修正案。
The likes of Jon Tester, a new senator in Montana, and Heath Shuler, a North Carolina congressional freshman, did much bragging about their lifelong gun ownership and support for the second amendment.
叔丁基羟基茴香醚(BHA)和二叔丁基对甲酚(BHT)不仅用于保护食品，还被用来保存化妆品和药品中的油脂。
In addition to preserving foods, BHA and BHT are also used to preserve fats and oils in cosmetics and pharmaceuticals.
叔丁基羟基茴香醚（BHA）和二叔丁基对甲酚（BHT）的氧化特性和/或代谢产物也许具有致癌性或致瘤性，不过，同样的反应也有可能应对氧化压力。
The oxidative characteristics and/or metabolites of BHA and BHT may contribute to carcinogenicity or tumorigenicity; however the same reactions may combat oxidative stress.
脂肪醇催化胺化制叔胺的工艺是目前生产脂肪叔胺的主要方法，和传统的酸法工艺相比具有明显的优势。
The process of catalytic amination of fatty alcohols is the main method to produce tertiary amines and has obvious advantages compared with the conventional process of fatty acids.
我们把这个美好的愿望和二叔通了气，唯独不告诉爷爷和奶奶。
We put the good wishes and two ShuTong gas, but don't tell grandpa and grandma.
小小奇异鸟杰克，金鱼莉莉和小狗庄叔华一起去学校。
Little kiwi bird Jacket, golden fish Lily and doggie Joshua are going to school together.
如果用三叔丁基羟基作为氨基保护基团使用，应用酸来将其脱去，如以盐酸和异丙醇为溶剂或无水三氟乙酸。
If the tertiary butyloxycarbonyl group is being used as amino-protecting group, its removal is effected with acid, such as HCl and isopropanol as a solvent or with trifluoroacetic acid neat.
氧气优先与叔丁基羟基茴香醚（BHA）或二叔丁基对甲酚（BHT）反应，而不是和油脂反应，因此能防止它们变坏。
Oxygen reacts preferentially with BHA or BHT rather than oxidizing fats or oils, thereby protecting them from spoilage.
由于叔丁基的特殊结构和性质，叔亮氨酸是重要的医药中间体和不对称合成的手性诱导模板。
Owing to the special structure and properties, tert-leucine is an important intermediate in pharmaceutical production and a chiral auxiliary for asymmetric synthesis.
爷爷奶奶已经开始准备午饭，爸爸妈妈加入准备的行列，我和二叔一起玩耍去了……吃午饭的时候，我们没有泄密！
Grandpa's grandmother has already started to prepare lunch, mom and dad to join preparation, SEC. Uncle and I went to play... For lunch, we have no leaks!
本文主要考察和研究了反应压力、空速、反应温度、醇烯摩尔比对叔戊烯转化率的影响。
This paper mainly studies the effect of pressure, LHSV, temperature and mole ratio of alcohol and alkene on conversion ratio of tertiary amylene.
对美国禁用甲基叔丁基醚(MTBE)趋势和全球MT BE需求动向进行了分析，介绍了禁用MTBE的替代措施，并阐述了中国现状和前景。
The American phase out MTBE and global MTBE demand trend are introduced. The alternative routes of phase out MTBE are reviewed. Our country status and prospect are also prepared.
在新时期，凌叔华研究进入了新的阶段，在人物形象和艺术风格研究等方面取得了突出成就。
In the new period, research on Ling Shuhua has got into position, and made great achievement in figural image and artistic style.
而之所以形成这种女性观，则源于当时提倡女权的社会背景和李叔同个人的生活经历。
The formation of this viewpoint could be originated from the social background of advocating female rights and his personal .
考察了对叔丁基酚含量对固含量和涂料性能的影响。
The influence of content of para-tertiary butyl phenol on solid and performance of coatings is investigated.
考察了对叔丁基酚含量对固含量和涂料性能的影响。
The influence of content of para-tertiary butyl phenol on solid and performance of coatings is investigated.
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