其次，区域选择性的烯丙基考察(表3)。
Next, the regioselectivity of the allylation was investigated (Table 3).
探讨了不同的钯化合物的区域选择性和催化作用。
Regio selectivity and catalytic effect of different palladium compounds were discussed.
这一研究为生物分子的区域选择性固定提供了一个新的选择。
The research provide us a new method for the immobility of biomolecules selectively.
目的评估声门上型喉癌n 1、N2期行区域选择性颈廓清术的疗效。
Objective To estimate the cure effect of region-selectivity neck dissection in supraglottic larynx cancer (N1? N2).
用前线分子轨道（FMO）理论可以说明上述反应的区域选择性与位置选择性。
The regioselectivity and site selectivity of above cycloadditions can be elucidated by FMO theory.
同时，我们还研究了取代基团的电子效应和位阻效应对反应产率和区域选择性的影响。
At the same time, we have also investigated the influence of the electric effect and steric hindrance effect of the substituents to the yields and regioselectivity.
报道一种在区域选择性催化剂存在下，以2氯苯酚直接氯化合成2,6二氯苯酚的方法。
A procedure for synthesizing 2, 6 dichlorophenol by chlorinating 2 chlorophenol with chlorine in the presence of the regioselective catalyst is reported.
另外，各类亲核试剂对环氧的开环得到了区域选择性和反式的立体选择性都较高的开环产物。
In addition, high reactivity with various nucleophiles leads to high regioselective and trans-stereospecific ring-opening products.
结果表明，决定该反应区域选择性的主要因素不是反应的活化能，而是氢键复合物间的能量差异。
The calculated results show that the regioselectivity of this reaction doesn't result from the energy barriers of relate reactions but the energy gap of the H-bond complexes.
因此，观察到的区域选择性是一个动力学的选择性，而不是简单的平衡到较稳定的线性产品的结果。
Thus, the observed regioselectivity is a kinetic selectivity and not simply the result of equilibration to the more stable linear product.
这一结果证明，真空紫外光刻后，蛋白质在基材表面的吸附呈现区域选择性，可以形成蛋白质图案。
This result proved that proteins were absorbed on the surface selectively, and protein patterns could be formed then.
用醇作溶剂、微量的浓硫酸作催化剂，稠合双环氮杂环丙烷衍生物可发生区域选择性氮杂环开环反应。
Bicyclic fused aziridines can generate regioselective ring opening reaction with various alcohols, catalyzed by slight concentrated sulfuric acid.
本文主要工作是找到富勒烯化学修饰的三种新方法，合成了几类新型的富勒烯衍生物以及研究了C _(70)单加成反应的区域选择性。
In this dissertation, we synthesized three types of new fullerene derivatives and investigated the regioselectivity of the mono-addition reactions of C_ (70).
综述了近年来芳基-芳基偶联反应的研究进展，包括不同类型芳基-芳基偶联反应的特点、机理和应用，尤其是对立体选择性和区域选择性的偶联方法进行了重点介绍。
This paper reviewed the advances of aryl-aryl coupling reactions in the past several years, including the feature, mechanism and application of different aryl-aryl coupling reactions.
一种选择性、富有争议和更加严谨的做法是反复使用“等积地图”投影，该投影显示国家的正确区域又能使外形的扭曲最小化。
An alternative and arguably more rigorous approach would be to repeat the exercise using an "equal area" projection that shows the countries' areas correctly while minimising shape distortion.
阻剂：用来选择性保护某图形区域免受蚀刻剂，焊料或电镀影响的涂层材料。
Resist: coating material used to mask or to protect selected areas of a pattern from the action of an etchant solder or plating.
型产品提供开放式工作区域的手工冷却和过程冷却以及选择性的局部减温。
Type m units provide man cooling and process cooling for both open work areas and selective spot cooling.
利用选择性部分无序技术获得了单片外延片上不同区域的多量子阱在结构与性质上的差异。
The differences in the structures and properties of multiple quantum well between different areas on a wafer were achieved using selective partial disordering.
选择性激光烧结(SLS)技术使用激光束进行截面区域烧结，扫描系统需要作大量的扫描，所以扫描路径的选择就显得尤为重要。
Laser is used to sinter the Selective laser sintering (SLS) parts. The scanning system needs to do plenty of scan, so scan method is very important to SLS process.
准确实现各种电路板避开连接器等非涂覆区域的选择性喷涂工艺。
Circuit board exactly averting connector, etc no coating area, able to realize selective spraying technics.
利用多孔硅形成的选择性，在指定的硅衬底区域制作多孔硅作牺牲层。
The porous silicon as a sacrificial layer could be fabricated in locally defined areas on the si substrate, using the selective formation of porous silicon.
它依赖于用亚硫酸氢钠处理后，非甲基化的 胞嘧啶选择性的去氨基为 尿嘧啶，通常接着所选的靶向区域的PCR扩增。
It relies upon the selective deamination of unmethylated cytosine to uracil after treatment with sodium bisulphite, usually followed by PCR amplification of the chosen target region.
简要综述了对2,3 -环氧醇及其衍生物进行区域及立体选择性开环的各种方法的近期进展。
This paper reviews briefly recent developments in the regio and stereoselective ring opening of 2, 3 epoxy alcohols and their derivatives by a variety of methods.
目的评价对于舌鳞癌无区域性淋巴结转移患者选择性颈淋巴清扫的必要性。
Objective To assess whether the elective neck dissection would be beneficial as a routine management in the N 0 squamous cell carcinoma of the tongue.
目的评价对于舌鳞癌无区域性淋巴结转移患者选择性颈淋巴清扫的必要性。
Objective To assess whether the elective neck dissection would be beneficial as a routine management in the N 0 squamous cell carcinoma of the tongue.
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