查询词典 symmetry

In contrast, the increases of the ellipticity of outgoing optical waves are obvious with the raise of Faraday rotation in non-fourfold-symmetry structures.

结果表明：在这些结构中，光波均被局域在中心缺陷处；同时，对于具有四重对称轴结构的材料，在其法拉第旋转角增加的同时，出射光波的椭圆率没有明显的增加；但对于不具有四重对称轴结构的材料，其法拉第旋转角增加的同时，出射光波的椭圆率也在增加。

The second part would induce culture connotation macroscopically embodied in the works of art. I am going to plan on analyzing advancement and harmoniousness in practical rule and entireness and symmetry in aesthetic pursuing. We can see microcosmic tone of cinemas and TV play series and macroscopical tone of culture how to set off mutually.

下篇对韩国影视剧中所体现的文化内蕴进行宏观上的归纳，分析其在现实层面上进步与和谐的准则，审美层面上整饬与对称的追求，使影视剧的微观语境与文化的宏观语境进行对接，看二者如何互相映衬。

RESULTS: After 34 weeks, patients occured varying degrees of swelling of the eyelids. Incomplete eyelid closure dribbled away. Followed up for 418 months,doubleeyelids of patients were basic symmetry; the arcs were smooth; ptosis was corrected; depression of the upper orbital region was improved obviously; and no complications appeared, such as entropion and ectropion of the eyelid and eyelid deformity.Only 1 eye was rectified insufficiently.

结果：术后3～4wk内患者均有不同程度眼睑肿胀，眼睑闭合不全逐渐消失，随访4～18mo，患者双眼睑重睑基本对称，弧度流畅，上睑下垂矫正，上眶区凹陷明显改善，未出现眼睑内外翻及眼睑畸形等并发症，有1眼欠矫。

Quantum mechanical control; symmetry; Lie algebra; universal enveloping algebra; representation theory

清华大学；吴热冰量子力学控制；对称性；李代数；泛包络代数；表示理论

It is governed by the equation of continuity and momentum for the liquid in cylindrical coordinates with axial symmetry, the isentropic equation of state for water.

曲面头部的水弹高速冲击刚性表面的流体动力学问题，可以归结为无粘性、可压缩的不定常流动问题，受轴向对称园柱座标的连续和动量方程、水的等熵状态方程支配。

M.C. Escher is a great modern Dutch printer, and his works are outstanding for their artistic combination of ration and imagination and of science and art, which is closely related to his study on mathematical methods, especially the principles of symmetry in geometry.

荷兰现代版画家M.C。埃舍尔的作品兼备理性与幻想、融合了科学与艺术的双重特性，这与他坚持不懈的对数学方法，特别是几何方法中对称原理的研究有着内在联系。

We use a hybrid distance measure by the combination of the symmetry distance and the Euclidean distance.

在本论文中我们提出改进的方法，藉由使用欧几里德距离与对称性距离混合的方式作为分群基准来解决上述的问题。

When a solid region in three-space has an axis of symmetry, the evaluation of triple integrals overis often facilitated by using cylindrical coordinates.

当空间立体区域有一个对称轴时，计算上的三重积分通常使用柱坐标比较容易。

Symmetry methods play a key role in the researches of exact solutions of partial differential equation.

对称群方法在研究偏微分方程精确解的过程中扮演着重要的角色。

The variance of stress about particular points that situate on the edge where maximum stress point locates as the object function, we introduce complex method to optimize the position of exterior load point about pylon along the voyage direction and the angle between anti-swing stop and right-and-left symmetry plane about pylon under the determinate loads. We also compare the unoptimizable stress curves with the optimized to validate the feasibility and correctness of the optimization method.

将挂架上最大内应力点所在棱边的特征点的内应力方差作为目标函数，采用复合形方法对一定载荷状态下，挂架外载荷点沿航向的位置及防摆止动器与挂架左、右对称面间的夹角进行了优化设计，并将优化前、后的内应力曲线进行比较，验证了优化方法的可行性、正确性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。