使对称

The full space calculation model, which suits for the asymmetric structure sometimes even including air below the surface of medium, can enable simulative result to approach real one. The FDTD algorithm based on the mixed ABCs is proper to calculate the transmission line where the electromagnetic wave is transmitted in order to send electromagnetic energy along central conductor. The calculation efficiency will be raised if the PML absorbing boundary condition is set on both planes of transmitting direction and so is the MUR two-order absorbing boundary condition in the other planes.

全空间计算模型是适合所有的不对称结构的待研究体的，而且包括了介质下面的空气部分，使仿真更加的接近实验真实情况；基于MUR-PML混合吸收边界条件的时域有限差分法非常适合计算传输线这种结构，因为传输线是传送电磁波的，电磁能量主要是沿着中心导带行进，因此在两个传输端面上设置PML完全匹配层吸收边界条件，在其他面上设置MUR二阶吸收边界条件，会大大提高计算效率，而且计算结果与XFDTD仿真软件计算结果相比较，基本趋于一致。

We transformed RMgBr into R-Ti derivatives with the production of byproduct MgBrO~(i-Pr at the same time, but we didn\'t need romove the Mg salt by centrifugation or chelating reagents, for bis[2-(N,N-dimethylamino)ethyl] ether could chelate with Mg atom and thereby reduced the Louis acidity of Mg salt, so we used R-Ti derivatives produced in situ to alkylate the aldehydes induced by BINOL-Ti complexes..

我们通过利用TiO~(i-Pr_4使格氏试剂转化成烷基钛，同时产生具有亲核加成促进作用的副产物MgBrO~(i-Pr，由于BDMAEE能与MgBrO~(i--Pr络合降低其路易酸活性，所以不需要离心或者借助络合试剂完全除去镁盐，而使用原位生成的烷基钛在BINOL-Ti诱导下对醛进行不对称加成。

Note that the signal amplitude is nominally flat, despite the varying range and angle of incidence associated with scanning.

波的轮廓以中心对称这个PPS系统的特征是扫描过程使接收能量在接受器表面移动的结果。

In west, there is not a generally accepted opinion, though there are much theoretical and empirical evidence, there are two theories: Dividend policy is relevant, vintner study dividend policy about dividend signaling by positive research, Jensen and Meckling created agency cost theory, they provide and analysis of the affects of agency conflicts among corporate stockholders, corporate managers and creditor; they suggest that management stock ownership can reduce agency cost by aligning their interests with shareholder's interest.

因为一定量的内部留存收益是保证公司长期发展的重要资金来源，而股利则为股东提供当期收入，股东对股利的不同偏好直接影响公司未来的股票价格，从而影响公司的发展，因此，在信息不对称的条件下，如何将公司实现的收益在股东和内部留存之间进行合理分配，以制定一个合理的股利政策，使股利的发放与公司的未来持续发展相适应，并使公司股票价格稳中有升，便成了公司管理层难以处理的实际问题，也使得对影响我国股利分配政策影响因素的研究变的尤为重要。

The vibratory forming theory is introduced as follows. The vibration, which is obtained through shock excitation electric engines driving tow symmetric wobbler shafts, makes the compacted stuff generate vibratory shock.

其振动成型原理是通过激振电机驱动对称安装在振动台上的偏心块轴，产生激振力使振动台产生所需的振动，由于振动使被压实材料内产生振动冲击。

Electron donating substituent CH〓, OCH〓 and 4, 5-benzo make λ〓 red shift, electron with -drawing substituent F, Cl and CF〓 make λ〓 hypsochromic shift; b The W〓 is bigger than relative symmetrical carbocyanines, and the ratio of 0-1＇ and 0-0＇ transition intensity increase with the increase of σ〓; c The absorption and the fluorescence spectra are mirror image, and the λ〓 have a good linear relationship; d The Stokes shift △λ〓 and the Hammett σ〓 constant have a good linear relationship.

研究了染料的光物理性质，①苯环上取代基影响染料的λ〓和摩尔消光系数，相对于H，给电子取代基CH〓、OCH〓、4，5-benzo使λ〓红移，摩尔消光系数减小，吸电子取代基F、Cl、CF〓使λ〓蓝移，摩尔消光系数减小；②化合物吸收峰的半峰宽较相应的对称染料的大，且振动肩部与最大吸收峰的强度比随σ〓增大而增大；③吸收光谱与荧光光谱呈镜像关系，且λ〓与λ〓呈良好的线性关系；④化合物的Stokes位移△λ〓与取代基的Hammett σ〓常数呈线性关系。

In Drsophila eye, PCP is evident in the coordinated orientation of ommatidia that rotate 90° in opposite directions in the dorsal and ventral halves of the eye during eye development. The key point for ommatidia to rotate correctly is the decision of R3/R4 fate that is controlled by PCP.

平面细胞极性在果蝇复眼的功能是在发育过程中协调位处背腹部的小眼各自旋转90度，使其依背腹轴形成镜像对称，而要使此过程有正确的旋转角度就要有正确的R3/R4细胞命运的选择，平面细胞极性的作用正是调控R3/R4细胞的选择。

Aiming to characteristic of 3-phase to 2-phase power supply based on balance transformer, a new current balance compensation method utilizing inverter is proposed, which is mainly used to compensate negative sequence current .

从而使平衡变压器两相侧的输出电流对称，消除平衡变压器三相侧产生负序电流的条件，达到三相电流对称的目的。

The shoe boots of this kind of design broke semmetry and balanced modelling principle, do one's best helps the change of type design, with popularity slant head last for shaping a shoe close suitably, with modelling of asymmetry of a kind of reduplicative, make whole shoe money bring out the best in each other.

这种款式的鞋靴打破了对称与均衡的造型原则，力求帮样款式的变化，与流行的偏头鞋楦相配合，以一种重复的不对称造型，使整个鞋款相得益彰。

Dian floor of the distribution of symmetry in the changes, scattered in the contact and tortuous loop, the actual situation of health, Xiaoqiaolinglong, space rich, varied levels, see in the small, unknowingly for such a small place, is compact and Cuola dependencies, and its layout Pingchuan temple is different from the axis prominent, symmetrical, but also different from the mountain Temple mountain gradually increase the pattern, Junyi cliffs convex, the shape of the potential trial,by zhe naturally , air and structure, look, Stack Cuola, subtle changes to the composition and physical space to contrast the orderly performance art.

殿楼的分布都对称中有变化，分散中有联络，曲折回环，虚实相生，小巧玲珑，空间丰富，层次多变，小中见大，不觉为弹丸之地，布局紧凑，错落相依，其布局既不同于平川寺院的中轴突出，左右对称，也不同于山地宫观依山势逐步升高的格局，均依崖壁凹凸，审形度势，顺其自然，凌空而构，看上去，层叠错落，变化微妙，使形体的组合和空间对比达到了井然有序的艺术效果。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。