查询词典 elimination by substitution

In which actors with nucleophiles known nucleophilic substitution reaction, and the role of electrophilic reagents are known as electrophilic substitution reaction.

其中与亲核试剂作用者称为亲核取代反应，与亲电试剂作用者称为亲电取代反应。

The reaction result showed that the reactivity of Grignard reagent was different in THF and diethyl ether when subjected to substitution reaction, which gave three products with different substitution degree.

研究表明，生成的Grignard试剂在THF和乙醚中的反应性不同，与甲基三硅烷或四乙氧基硅烷发生取代反应时生成不同取代度的产物，控制反应条件可得到以单取代、双取代或三取代硅烷为主的产物。

THIS RESTRICTION DOSE NOT APPLY WHEN SUBSTITUTION OF DOCUMENT IS NOT REQUIRED, HOWEVER A CONFIRMATION TO THIS EFFECT SHOULD BE SENT TO HABA BANK USA, N.A. BY TESTED TELEX/AUTHENTICATED SWIFT. 6 A COPY OF THE TRANSFER ADVICE CLEARLY INDICATING WHETHER SUBSTITUTION OF DOCUMENT BY FIRST BENEFICIARY IS REQUIRED OR NOT MUST ACCOMPANY ALL RELATIVE DRAWINGS.

这制约药量不申请，当没有需要文件的代替，然而应该送确认到这个作用到美国的HABA银行，N.A由测试的电传或被证实的快速 6 清楚地表明不论的调动忠告的拷贝由第一个受益人需要文件的代替必须伴随所有相对图画。

Emphasis is on substitution and elimination reactions and chemistry of the carbonyl group.

重点强调取代、消除反应和含羰基基团的化学性质。

Find solutions by the elimination and substitution methods.

通过消除和替代法找到解题方案。

Because the coupling condition of NNGFM arises from the net current continuity imposed at the volume element interfaces, the relatively complex conversion formulation for partial current continuity condition of NGFM is unnecessary when applying G. E. T., and computation time is saved. The coefficient matrix of the coupled equations is tridiagonal, so it can be solved by forward elimination and backward substitution method.

NNGFM的基准校验及在大庆200MW核供热堆(NHR-200)上的应用表明，NNGFM计算精度和速度与第三类边界条件格林函数节块法NGFM〓相当，在相同精度下速度比CITATION能快1000倍；NNGFM给出的本征值、功率分布较NNGFM误差能减少一半以上，为更精确计算工作期、卡棒当量提供了条件。

Olefine, electrophilic or nucleophilic substitution of arenes, nucleophilic addition of carbonyl compounds stereochemistry in elimination reaction of double bond forming and the choosing of oxidants and reducing agents in redox system.

在化学反应方面重点是烯烃的亲电加成，芳香烃的亲电，亲核取代，羰基化合物的亲核加成，消除反应的双键定位和立体化学，氧化，还原反应中氧化还原剂的选择。

The conversion of the cyclobutanes to the corresponding annulation products was achieved by a reaction sequence of [elimination of HCl in the cyclobutanes-4 electron electrocyclic ring opening-6 electron electrocyclic ring closure-elimination of another HCl molecule] .

这些环丁烷产物向增环产物的转化是经一个[脱除－分子HCl得环丁烯－环丁烯电环开环为丁二烯－6电子电环闭环－脱除另一分子HCl]这一连续反应进行的。

In the third chapter, the ultrastructure of cercaria is introduced, the feasibility of using high-voltage pulsed electric field to eliminate schistosome is discussed, elimination mechanism of high-voltage pulsed electric field is researched and the factors which affect the elimination effect are analyzed.

第三章主要介绍尾蚴的超微结构，探讨采用血吸虫尾蚴高压脉冲电场杀灭技术的可行性，研究血吸虫尾蚴高压脉冲电场杀灭技术的机理，分析影响杀灭效果的电场参数、处理环境和生物特性因素。

NO elimination reactions are much complicated in the system of NO-CO-CO2-N2 with the existence of metallic oxides. Homogeneous reaction between NO and CO, reduction of NO by the lower valued metallic oxides, direct decomposition of NO as a catalytic reaction and catalytic reaction of NO/CO may all contribute in NO elimination.

金属氧化物存在条件下NO-CO-CO2-N2体系中，NO去除反应较为复杂，NO/CO气相直接反应、低价氧化物对NO的还原作用、金属氧化物对NO分解反应的催化作用及金属氧化物对NO/CO反应的催化作用等都可能存在。

Although translator has turned from being a crystal ball by which the original culture can unrestrainedly penetrate to another crystal ball by which the target culture can freely traverse, the translator's personal embodiment, in the process of cognitive act, are still absent in translation studies. Translators are still subjects without body or simply disembodied subjects.

译者虽然由原语文化可以自由穿透的玻璃球变成了译语文化可以自由穿越的玻璃球，但译者认知过程中的个体体验在翻译研究中依然缺席，译者依然仅仅是一个没有躯体体验的主体。

Chillingly, he claimed our technology is 'not nearly as sophisticated' as theirs and "had they been hostile", he warned 'we would be been gone by now'.

令人毛骨悚然的，他声称我们的技术是'并不那么复杂，像他们一样，和"如果他们敌意"，他警告说，'我们将现在已经过去了。