查询词典 tandem

The dissertation mainly consists of two parts:1. The Reaction Chemistry of Alkynes under Palladium Catalysis Part 1 studies the reaction α,β-unsaturated carbonyl compounds with alkenylpalladium intermediate generated by nucleopalladation, and discovered 1 the Pd-catalyzed tandem addition reaction of halides, alkynes and α,β-unsaturated carbonyls,2 the four-component tandem addition reaction of halides, alkynes and α,β-unsaturated carbonyls, 3 the tandem intramolecular oxypalladation-conjugate additionreaction of alkynoic acids with α,β-enals. These new reactions provide notonly efficient highly stereoselective methods for the synthesis of γ,δ-unsaturated,polyunsaturated carbonyl compounds and γ-lactonic aldehydes, but also thebasic transformations for a number of C-C bond formation reactions which can be usedto design synthesis of many acyclic, cyclic or polycyclic compounds.

本论文的主要工作分为两个部分：一、钯催化下炔烃的反应化学在本小组前人工作的基础上，我们详细研究了炔烃亲核钯化产生的烯基钯中间体与α，β-不饱和羰基化合物的反应，发现两价钯催化下卤离子-炔烃-α，β-不饱和醛酮的串联加成反应、卤离子-炔烃-α，β-不饱和醛酮的西组分串联加成及炔酸分子内氧钯化-串联Michael型加成反应；由此发展了γ，δ-不饱和醛酮、多不饱和羰基化合物和带有醛酮基侧链的γ-丁内酯衍生物的高立体选择性合成方法，这一过量卤离子存在下的烯基钯对α，β-不饱和羰基化合物共轭加成反应的发现，为大量碳-碳键形成反应的实现提供了基础，使我们能够从这一基本反应出发，设计和开发多种分子内、分子间的碳碳成键反应，以好的立体、区域选择性组建开链、环状及多环类型的化合物。

Based on the previous research on the deposition of amorphous/microcrystalline silicon tandem solar cells, silane concentration for the deposition of microcrystalline bottom cell was selected to further optimize the performance for micromorph tandem solar cells using very high frequency technique. Finally, micromorph silicon tandem solar cell with 11.02%(Area=1.0cm2) initial conversion efficiency has been fabricated at a certain silane concentration and suitable light trapping structure.

采用甚高频等离子体增强化学气相沉积技术，在前期我们单室沉积的微晶硅薄膜太阳电池和非晶硅/微晶硅叠层太阳电池研究的基础上，通过对微晶硅底电池本征层硅烷浓度的优化，获得了初始效率达到11.02%（电池面积1.0cm2）的非晶硅/微晶硅叠层太阳电池。

In this study, the DNA fragments coding for amino acids 133～158 of VP1and 20～34 of VP4protein of type Asial FMDV were chemically synthesized and ligated into a tandem repeat 133～158-20～34-133～158. The sequences of signal peptide of Igκ chain and Kozak were fused to the 5'end of this tandem sequence and synthetic oligodeoxynucleotide containing CpG-ISS was fused to downstream of terminal coden of this tandem sequence. And then this long fragment was cloned into the eukaryotic expression plasmid pHook-2, forming a new secreted expression plasmid, named pAS1-E.

在第二章证明了亚洲Ⅰ型口蹄疫病毒VP1蛋白中133～158位氨基酸残基确是一重要B细胞中和抗原表位的基础上，依据第一章获得的口蹄疫病毒亚洲Ⅰ型VP1 cDNA序列及已报道Asial VP4序列，采用真核偏爱密码子化学合成了VP1中编码133～158位氨基酸及VP4中编码20～34位氨基酸这两个抗原表位基因，将其组成133～158-20～34-133～158串联结构，在其5′端加上鼠Igκ链信号肽序列，在翻译调节区加上增强表达的Kozak序列，同时在133～158-20～34-133～158串联结构3'端终止密码子下游加上CpG免疫刺激序列，将这些片段连接后，克隆到真核表达载体pHook-2上，构建成功了DNA疫苗重组表达载体pAS1-E。

Tandem bluff bodies.It is found that:（1）occurrence of the self-excited flow between two tandem bluff bodies depend strongly upon:the Reynolds number, the streamwise spacing between two tandem bluff bodies, the vortex formation length of the single upstream bluff body, and the characteristic length of the downstream bluff body.

本实验结果显示：（1）双钝体间具有自激式振荡的流场特性归纳如下：雷诺数、双钝体间的纵向间距、上游钝体的涡漩形成长度、下游钝体相对之特徵尺寸等均是影响双钝体间自激式振荡特性的重要参数。

We demonstrated ultra-thin tandem WOLEDs by locating yellow and blue emitters at corresponding first antinodes to the metal electrode, instead of 1st and 2nd antinodes in conventional tandem OLEDs. This attempt leads to the substantial reduction of operating voltage improvement in power efficiency, compared to conventional tandem WOLEDs. Besides, it shows stable EL spectra under various bias conditions.

本论文提出一超薄堆叠串接型有机白光元件结构，系利用不同波长的光其反节点位置不同的特性，将黄光及蓝光分别制作於各自的第一反节点，而得以在维持原发光效率的前提之下，减少元件整体厚度，进而降低操作电压及提升元件能量转换效率之目的。

The first tandem-implanter-TEM interface system in China, consisting of a 2×1.7 MV tandem accelerator, a 200 kV ion implanter, a H800 transmission electron microscope and the beam transport system, was established recently.

建立了由2×1.7 MV串列加速器、200kV离子注入机、H800型透射电子显微镜和联机传输系统组成的我国第1套串列加速器－离子注入机－透射电子显微镜联机装置。

This Sm-catalyzed reaction firstly efficiently realized the catalytic cycle in the tandem rearrangement/reduction reaction of α-hydroxy epoxides, and moreover the diastereoselective amplification could be distinctly observed when two C1 epimers in substrate were subjected to this catalytic tandem reaction.

该催化的多功能串联反应，高度非对映选择性地一步控制了含有季碳的三个相邻立体中心，有效地构建了&2-季碳1，3-二醇&结构单元，首次实现了此类重排—还原过程的催化循环，其中对于两个C1位的差向异构体底物，此反应具有明显的非对映选择性放大特点。

In order to accommodate the pickling line and tandem cold mill unit with diversification of the production rhythm,loopers are equipped between welders and tension levelers,between acid tanks and side trimmers and at the entry of the tandem cold mill to store the strip and keep the pickling speed stable.

0前言随着下游产品和后道工序针对冷轧钢板表面质量和内在性能要求的不断提高，在冷轧的酸洗轧机联合机组中，无论正常的生产节奏如何变化，都希望能够做到带钢表面酸洗的连续、稳定、恒速，为了达到这一目的，在焊机和拉矫机之间、酸槽和圆盘剪之间以及轧机入口，分别设置了用于储存带钢的活套装置。

In previous articles we have looked at the where the recumbent bicycle came from and what are its benefits in this article we will look at reasons for why you and your partner should consider a recumbent tandem bicycle in place of the traditional tandem as your next purchase.

在以前的文章我们已经看的躺式自行车自行车来自什么是它的好处本文中，我们将看看的理由，为什么你和你的伙伴应考虑卧串联自行车以代替传统的串联作为您下次购买。

In previous articles we have looked at the where the recumbent bicycle came from and what are its benefits in this article we will look at reasons for why you and your partner should consider a recumbent tandem bicycle in place of the traditional tandem as your next purchase.

在我们的地方横卧自行车来自什么本文其利益，我们将研究为什么你和你的伴侣应该考虑作为您下次购买一套传统的串联横卧双人自行车的原因看以前的文章。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。