对称的

The main achievements of this dissertation are as follows: Let W be a nonsingular matrix. 1. Problem I and Problem II are considered under the matrix set S is as the following: 1 the set of real W-symmetrizable matrices; 2 the set of real W-symmetrizable nonnegative definite matrices; 3 the set of real W-symmetrizable matrices on the linear manifold.

对于问题I和问题II，本文就S是W可对称化矩阵集合、W可对称非负定化矩阵集合以及线性流形上W可对称化矩阵集合等三种情况进行了研究，分别给出了这三种情况下问题I的解存在的充分必要条件，以及解集合的通式表达式，给出了这三种情况下的最佳逼近解，并提供了相应的数值算法和数值实例。

According to the results of morphological, cytological and molecular identification, it was proved that cybrids were obtained from 7-0-8-4+66-3 fusion combination, and the petaloid cytoplasmic male st

论文对影响胡萝卜原生质体非对称融合的若干因子、组培茵的先期抽墓、利用非对称融合转移胡萝卜瓣化型雄性不育性的可行性、本研究存在的问题及改进方案以及非对称原生质体融合在胡萝卜资源创新中的应用价值等进行了讨论。

The matrix equations for calculating primary and secondary phase voltage and phase current are deduced.

三相变压器的不对称现象通常是由外施电压的不对称或负载的不对称而引起的。

This will help the experiments to find the SUSY signal and to test these theories. We studied the radiation correction to the production and decay of some SUSY particles, investigated the phenomenology of R-parity violation SUSY models and established the R-parity violation event generator basing on PYTHIA package, and analysed the CP-violation effects induced by the model complex parameters.

我们具体分析了LHC上不同模型参数条件下超对称粒子的产生和衰变特性及其辐射修正效应；研究R-宇称不守恒下超对称模型现象学并完成了基于PYTHIA程序包的R宇称不守恒的事例产生程序；分析了某些物理过程中超对称模型复参数所引起的CP破坏效应。

Asymmetric hydrogenation of quinoline derivatives is a hot topic in asymmetric hydrogenation. However, some problems still remained.

芳香杂环化合物喹啉衍生物的不对称氢化一直是不对称氢化领域的一个热点，然而对于苄基取代喹啉和一些多取代的喹啉衍生物至今没有实现有效的不对称氢化。

The 2/SegPhos/I2 system can be applied in asymmetric hydrosilylation of quinoline and quinoxaline derivatives successfully, and up to 93% ee was obtained.

芳香杂环化合物喹啉衍生物的不对称硅氢化反应一直是不对称氢化领域的一个难点，我们利用2/-SegPhos/I2催化体系首次实现了杂芳香化合物：喹啉和喹喔啉的不对称硅氢化反应，最高获得了93%的ee值。

There are two independent molecules of ZnL or Co(IIL and two water molecules in one asymmetric unit of complex 1(or 2), the crystal structure of CuClL1·2H2O consists of one molecule of CuClL1 and two water solvate molecules in the asymmetric unit, while the ZnL·CH3OH (4) comprises of one molecule of ZnL and a methanol molecule in per unit.

在这四个金属配合物中，配合物(1)和配合物(2)的每个不对称单元中有两个独立的ML 分子和两个水分子，配合物(3)的每个不对称单元中有一个CuClL1分子和两个水分子，而配合物(4)的每个不对称单元中只有一个ZnL 分子和一个甲醇分子。

There are two independent molecules of ZnL or Co(IIL and two water moleculesin one asymmetric unit of complex 1(or 2), the crystal structure of CuClL_1·2H_2O consistsof one molecule of CuClL_1 and two water solvate molecules in the asymmetric unit,while the ZnL·CH3OH (4) comprises of one molecule of ZnL and a methanolmolecule in per unit.

在这四个金属配合物中，配合物(1)和配合物(2)的每个不对称单元中有两个独立的MLZn(IIL、CoL分子和两个水分子，配合物(3)的每个不对称单元中有一个CuClL_1分子和两个水分子，而配合物(4)的每个不对称单元中只有一个ZnL分子和一个甲醇分子。

The purpose of this research project is to work on the precise theoretic analysis of the production and decay of these SUSY particles within different model paremeter spaces at the perturbative One-Loop level, and try to find the measurable physics processes and physics observables.

本课题是对不同模型参数条件下超对称粒子的产生和衰变特性在单圈图水平上做精确的理论分析，寻找合适的探测过程及物理观测量，为在LHC上发现超对称信号及对超对称理论的检验提供理论上的指导。

3 Axially Symmetric Problems for Space Among spatial problems, if the elasticity body's geometric shape,restraint condition and any external factors are symmetrical in a certain axis(any plane which passes this axis is all symmetrical one),then all stresses,deformations and displacements are symmetrical in this axis.

§8-3 空间轴对称问题在空间问题中，若弹性体的几何形状，约束情况以及所受的外来因素，都对称于某一轴(通过这个轴的任一平面都是对称面)，则所有的应力，形变和位移也对称于这一轴。

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