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The immobilized ligands have been applied to the Pd-catalyzed asymmetric allylic alkylation of 1,3-diphenyl-2-propenyl acetate.

这些负载的P-N 配体被应用到Pd催化的、1，3-二苯基-2-丙酸乙酯的烷基化反应中。

Chiral N,P ligand 5 was examined for the asymmetric allylic alkylation of 1,3-diphenyl-2-propenyl acetate with up to 89% yield and up to 81.6% ee.

化合物5用于钯催化的1，3-二苯基-2-烯丙基乙酸酯的不对称烯丙基烷基化反应，产率为89%，对映体过量最高为81.6% ee。

This thesis focused mainly on studying the role of planar chirality in asymmetric catalysis, synthesizing novel ferrocene ligands and applying them to palladium-catalyzed allylic substitution reactions.

本论文主要是研究二茂铁平面手性在不对称催化反应中的作用，设计合成新型二茂铁配体及其在钯催化烯丙基取代反应中的应用。

For accelerating this problem's compute time in parallel computer, we use Saul'yev type asymmetric different scheme and classicality explicit-implicit type to get a new alternating group explicit method for solving diffusion equation.

为便于在并行计算机上计算以加快计算速度，现将第二类saul'yev非对称格式以及古典显、隐式相结合，构造了求解扩散方程的一类交替分组显格式，其基本结构为四点组，并针对内点为偶数的情况，在节点两端点处进行了处理，以提高精度。

Especially aiming at the asymmetric structure of the cast, the allocation of aluminous liquid during the filling process was presented and the concept of structure mass fraction was inducted.

针对铸件的不对称结构提出了充型过程中铝液的分配问题，引入结构质量分数的概念。

Nigra, B. oleracea and B. carinata belonged to class 2A according to the classification of karyotypes by Stebbins (1971). According to Levitzky's and Stebbin's view, the more asymmetric karyotype a species has, the more evolved it is. Therefore, B. campestris is the furthest evolved species among the elementary species, and B. juncea and B. napus the furthest among the amphidiploid species. Compared with the previous reports, there is no any cytoplasm in the chromosome sample prepared using this protocol which is very useful for the karyotype analysis, as well as the FISH research on Brassica species.

对上述研究结果分析表明：（1）芸薹属复合种是由基本种相互杂交而成；（2）B基因组与A或与C基因组亲缘关系较远，而A和C基因组亲缘关系较近；（3）芸薹属复合种在演化过程中，发生了染色体结构上的重排现象；（4）芸薹属复合种演化过程中，rRNA基因位点发生了减少；所获结果与国外同类报道相比表明：国内的白菜型油菜存在新的rRNA基因位点，即rRNA基因在芸薹属同一物种不同的品种间具有多态性；有关这类研究国内尚未见报道。

We propose experimentally feasible schemes to implement the optimal asymmetric economical 1→2 and 1→3 phase-covariant cloning,which work without ancilla,in the context of ion-trap system.

我们提出利用离子阱技术来实现1→2和1→3的最优非对称经济型相位协变克隆的实验可行性方案。

The characteristics of asymmetric impinging streams were measured with hot wire anemometry and simulated with CFD.

华东理工大学资源与环境工程学院，上海 200237摘要采用恒温式热线风速仪测量不对称撞击流流场。

The axial velocity and stagnation point offset of two opposed jets coming from two asymmetric nozzles oppositely located with large separation distance were studied by using hot-wire anemometry.

采用热线风速仪对大喷嘴间距下两不对称喷嘴形成的对置撞击流的轴线速度分布和驻点偏移规律进行了实验研究。

The early introduction of many new furniture or a large number of manufacturing, the use of color and soft furniture, decorative fabrics, patterns, including asymmetric disconnected curves, flowers, twisted vortex ornaments, shells, the Chinese-style decorative arts, musical instruments (violin, horn angle system, drum), a symbol of love, wreaths, shepherd scenes booty ornaments (Battle of the decorative layout of the symbol), flower and animal.

许多新的家具或制造大量早日推出，色彩和软家具，装饰面料，图案，包括非对称曲线断开，花卉，扭曲涡饰品，贝壳，中国式的装饰艺术，乐器使用(小提琴，喇叭角系统，鼓)是爱情的象征，花圈，战利品饰品，花卉和动物牧羊人的场面。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失