查询词典 symmetry

The heat was increasing, and amid the overcrowded rooms the quadrille unrolled the cadenced symmetry of its figures.

屋子里越来越热，在挤满人的客厅中间，四对舞的舞步既有节奏又对称。

According to quantum physics, our emotions are always in a perfect symmetry with what manifests in our life.

根据量子物理，我们的情绪是一个什么表现完美对称始终。

Based on the elasticity theory axial symmetry question quasi static, the back lining material stress characteristics were analyzed. Using photoelastic theory and thermal stress theory, the influence of temperature to the optical fiber phase constant was analyzed.

首先从弹性力学轴对称问题的准静态理论出发分析了背衬材料的应力特性，并用光弹理论及热应力理论分析了温度改变对光纤相位常数的影响，得出了温度影响干涉式光纤水听器光学相位输出的数学表达式。

And sure enough, only a few months later the decay of the atom nucleus in the radioactive element cobalt 60 revealed that it did not follow the principles of mirror symmetry.

几个月以后，利用放射性元素Co60的核衰变所做的实验表明镜像对称性不成立。

It means that the economy fluctuation rate is variable and the real GDP rate is symmetry in China.

这意味着中国经济波动率是变化的，而且GDP实际增长率是对称的。

The break of symmetry caused by attenuation is studied, and the realizability condition of lossy network is discussed.

研究了损耗引起的对称破缺，并讨论了有耗网络可实现条件。

It is shown that two-component Wadati-Konno-Ichikawa equation, i.e. a generalization of the wellknown WKI equation is obtained from the motion of space curves in Euclidean geometry, and it is exactly a system for the graph of the curves when the curve motion is governed by the two-component modified Korteweg-de Vries flow. At the same time, a n-component generalization to the WKI equation is obtained. Also, starting from the motion of curves, mKdV and its symmetry recursion operator is exhibited explicitly; two- and n-component mKdV systems are obtained. It is shown that WKI systems are gauge equivalent to mKdV systems. The two-component WKI equation admits an infinity number of conservation laws and a recursion formula for the conserved densities is given by considering an eigenvalue problem together with introducing an appropriate transformation.

在二维和三维欧氏空间上，我们从空间曲线运动出发，推导出了mKdV方程以及它的用以生成高阶对称的递归算子；推导出了多元mKdV方程以及二元和多元WKI方程，并证明了WKI系统和mKdV系统的规范等价性；尔后，通过考虑特征值问题，并引入一个恰当变换，给出了二元WKI方程的用以计算无穷多守恒密度的递归公式，从而证明了二元WKI方程的守恒可积性；系统地分析了两种mKdV方程的Painleve性质，并分别给出了两种不同形式的二元和n元mKdV方程的共振点出现的规律。

The mode field of photonic crystal fiber structured with hexagon symmetry hole cladding was analyzed by coupled-mode, and the effective indexes of base mode of different wave length were got. The characteristics of this photonic crystal fiber grating were computed and simulated by coupled-mode method and transmission matrix method. Moreover, the differences were compared between conventional fiber grating and photonic crystal fiber grating on their reflection spectrum and delay.

利用多极法对包层空气孔为正六边形对称结构光子晶体光纤的模式场进行了分析，计算出不同波长下基模的有效折射率，结合使用模式耦合理论和传输矩阵法对基于光子晶体光纤的布拉格光栅特性进行了计算和仿真，对比了常规单模光纤所成光栅与相同光栅周期的光子晶体光纤布拉格光栅反射谱及时延特性之间的差异。

On the basis of the symmetry of response equation of a multi port reflectometer, the two complex constants of system are determined by using the same procedure.

自从六端口技术诞生以来〔2〕，各种校准方法层出不穷，任何一种校准方法都是针对多端口反射计响应方程而言的〔1〕。

The distribution of pressure in double volute is symmetry 180°, there is refluence on the tongue, there are also refluence and strike in the channel, the flux is different ,the degree of them are different.After analyzing the phenomena in a detailed way, we find there is unreasonable area in the design of volute.

双蜗壳内的压力分布呈180°对称分布，靠近蜗壳内侧的压力大于蜗壳外侧的压力，在隔舌处存在回流，在过渡流道内存在回流与撞击，流量不同，撞击和回流的程度不同。

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％。