小平面

The simulation results show that when light wave propagates along the angular bisector of corner angle in metamaterial volume,the electromagnetic focus effect will not exist in the metamaterial volume,although the permittivity and permeability of metamaterial are very small.

仿真结果表明：即便对于εr和μr都很小且无耗的正多边形异向介质柱，当平面光波沿正多边形顶角角平分线方向传播时，在异向介质柱内不会发生电磁聚焦。标签聚焦特性时域有限差分方法异向介质平面光波 Focus charaters FDTD Metamaterials Plane light wave

And an evaluating method for coplanarity is adopted,which is based on least condition principle.

提出一种基于激光跟踪原理对空间点的坐标进行测量，采用"最小条件"法为基础的共面性评价方法，实现了对由多个非连续铅垂面形成大平面的平面度的高精度测量，实际测得共面度为0。

This can be a least-squares plane or a plane passing through the center of gravity of the corners and is parallel to the mid-rulings of the hyperbolic paraboloid determined by the corners.

这可以是一个最小平方平面或者是一个通过拐角的重心并且平行于由拐点决定的双曲线抛物面的半轴的平面。

Analyses of loci in the π plane and meridian line s show that the parabolic and hyperbolic type failure envelopes have no influences on the shape of the.

对改进式所作的π平面极限线和子午线分析表明，采用抛物线和双曲线形强度包络线基本上不会改变原准则在π平面上的极限线形状，但子午线由直线改为曲线，极限面在主应力空间内分别为抛物面和双曲面，其锥顶距坐标原点也比采用线性强度包络线的要小。

These distributions show that the electrons lie mainly in the scattering plane which are observered to be preferentially emitted in the forward direction, lying between 0 and projectile velocity Vp. The distributions also display the typical two-fingered structure with a local minimum on internuclear axis.

结果表明：电子主要集中在散射平面内；在散射平面内，电子速度分布介于0和入射炮弹速度Vp之间且在炮弹和靶核核间轴处有一极小值，呈现出典型的双峰结构。

The influence of the material Poisson's ratio on the strain, stress and neutral plane in the direction perpendicular to the magnetization is prominent, but insignificant for the stress, strain and the neutral plane in the direction of magnetization, and further, its role can be neglected.

材料泊松比对垂直于磁化方向的应力和应变以及中平面的影响很大。但是，泊松比对磁化方向的应力，应变和中平面的影响很小，可以忽略。

When the sphere contacts 2-dimension world, it appears in the world just as growing bigger and shrinking to point. When the sphere goes through 2-dimension world, it disappears.

球体接触到二维平面，自然是慢慢变大再慢慢变小，当三维球体穿过二维平面，就消失了。

Principal plane: Any plane that contains two principal axes is regarded as a principal strain plane, where AB refers to the maximum principal plane, BD, the minimum principal plane and AD, the intermediate one.

主平面：包含任意两个应变主轴的面称为主应变面。其中：AB面为最大主平面，BD面为最小主应变面，AC为中间中应变面。AD面-代表亚性面，BC-代表张性面

By means of a resonable and approximate treatment the dependent variables of the integral equation are reduced to depend only on the two coordinates of the wing plane.

通过合理的近似处理，使积分方程的自变量仅依赖于机翼所在平面的两个座标，这就使我们在利用有限无法进行数值解时，只需在机翼平面上划分元素，避免了在流场空间中划分元素的传统作法，从而大大降低了对计算容量的要求和计算工作量，使跨音速三维机翼的气动力计算有可能在较小的计算机(例如709机)上完成。

The inside sealing structure of valve are plane sealing with blade shape, which can realize large ventilate areas with little unseal height. The outside sealing structures of valve are corrugated tube sealing without leakage point.

阀门的内密封结构采用形如刀口的平面密封，具有平面密封的特点(小的开启高度能获得较大的通气面积)，同时密封轴向力适中；外密封采用与外界无漏点的波纹管密封。

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