对称的

The 0°K relaxed structures of grain boundaries in Cu and its alloys (Cu-Ag, Cu-Bi) were simulated with molecular dynamics method by using a five-parameter potential and constant volume assumption.In these cases, the results showed that the atomic distribution was periodic in the two directions paralled to the grain boundary and it was mirror-symmetric in the direction perpendicular to the boundary.

本文采用五参数对势和固定体积的假定，应用分子动力学方法模拟了零温下纯Cu、Cu-Ag和Cu-Bi合金的晶界弛豫结构，计算结果表明，在上述情况下，原子分布在平行晶界面的两个方向是周期性的，在垂直晶界面的方向是镜面对称的。

The formation mechanism of the screw structures on the surfaces of polytype crystals is discussed according to the theoretical model of anionic coordination polyhedron growth units.

本文用负离子配位多面体生长基元理论模型讨论了多型性晶体表面螺旋结构的形成，提出在多型性晶体中配位多面体呈层状分布，配位多面体的面为层的边界，上、下层负离子配位多面体不是呈镜象对称的，在三方晶系和六方晶系的晶体中是沿晶轴a、b错开，上、下两层负离子配位多面体体呈交叉对应，从而达到稳定平衡。

Adopt girder unit and mixed unit to establish finite element model of stack based on the flexible stack. The former stack is simplified into 7 girders and 1 symmetrical space rigid frame of centralized quality.

针对某型机枪的弹性枪架，分别采用梁单元和混合单元建立枪架的有限元模型，前者的枪架被简化成由7个梁、1个集中质量组成的对称的空间刚架结构。

Simulation results show that current waveforms of electric power system are symmetric and pure sine curve, reactive and harmonic are compensated. Balance transforms, detecting methods and proposed cophase power supply are verified to be true and feasible.

仿真结果表明平衡后的电力系统侧电流波形为三相对称的纯正弦波形，完全补偿了无功与谐波，证明了平衡变换方式和滤波器指令电流检测方法的正确性，验证了所提出的同相供电方案的正确性和可行性。

This time symmetry was christened "The Theory of Matched Trend Time" and basically states the duration over which investors can obtain "superior equity returns" will always be equal to the previous time period in which returns were subnormal.

这一次被命名为对称"的理论相匹配的趋势时间"和国家基本的持续时间超过投资者能够获得"卓越的股权收益"将永远是平等的前时期的投资回报率低于正常。

If the straight line linking the nose and tail is defined as the major axis of the aircraft, any aircraft boundary is symmetric about its major axis.

尽管不同用途、不同国度生产的飞机，其形状、大小千差万别，但如果将机首与机尾的中心直线方向定义为飞机的主轴方向，则任何一架飞机的边缘图像都是关于主轴对称的。

A molded plastic bottle (10) has a base (24) having an outside surface rotationally symmetric about a longitudinal axis of the bottle including a convex heel (26) and a central concavity (28) separated by a standing ring (30) supporting the bottle on an underlying surface.

一种模制的塑料瓶(10)，具有一个带有绕瓶子的纵轴转动对称的外表面的底座(24)，该底座包括凸出的跟部(26)和中心凹面(28)，它们用将瓶子支撑在任何下垫面上的立环(30)互相分开。

The case of vertical axisymmetric bodies has been treated by Black and subsequently by Fenton using a symmetric Green's function, and also by Bai using the finite element method.

垂直轴对称的身体的情形已经被黑色对待和由使用一个对称的格林的功能的 Fenton 后来，以及由 Bai 使用有限的元素方法。

Stairs giving access from the swimming pool and to the roof terrace,along with a two-car garage under the guest suite on the south side of the house,complete the symmetrical repertoire.

从游泳池到屋顶阳台的提供出入口的楼梯，和一个在建筑南面的客房下面的二车位车库一起，各得整个建筑对称的完整。

It points out the phenomenon which includes administrative functions of Party organizations at the Grass-roots Level, the party and government is not separate from each other and the party practices the function of the government. There are some problems for example thin power of the township party organizations, asymmetric responsibility and authority, unconformable to the New Situations and the low Quality and Ability of Township partys government cadres. We analysis the reasons of above Problems .

指出目前乡镇党组织存在着职能行政化，"以党代政，党政不分"的现象，存在着职权弱化，责任与权力不对称的情况，乡镇党组织成员素质和能力偏低，与新形势的要求不相适应的问题等，并分析了存在这些问题的主要原因。

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