无方向的

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

These algorithms firstly get the characteristic of line from the normal part, and then track the line under the guidance of the characteristic direction, so that it can track through intersection or overlapping parts to recognize an entire line in one step.

这些方法在线条的无干扰部分搜索其特征，然后在特征方向的指导下进行跟踪，可以避免线条上相交、粘连部分的干扰，完整地识别线条。

The proposed beamformer represents a modification of the popular minimum variance distortionless response beamformer. It minimizes the array output power while maintaining the distortionless response in the direction of the desired signal and a sidelobe level that is strictly guaranteed to be lower than some given threshold value.

它是通常的最小方差无畸变波束形成算法的改进形式，使阵列输出信号功率最小的同时，保持目标信号方向的无失真响应，并且严格保证旁瓣低于某一给定值，抑制干扰。

This drive mechanism provides power with a linear synchronous motor avoiding friction, elastic distortion, hysteresis and non-linear error, and can realize non-contact support and guidance in the horizontal and vertical directions.

这种驱动方式避免了传统驱动方式造成的摩擦、弹性变形、滞后和非线性误差，实现了平台进给机构在水平和垂直两方向的无接触支撑和导向。

Using the Mindlin theory, the four-node finite element shell modal of healthy and damaged structure is formed; Using Green Function theory, the fluid around the structure is considered to be inviscid, irrotational and incompressible, and then the effect of fluid to structure is translated to the added mass matrix compared with global mass matrix using BEM.

基于Mindlin理论，本文建立了描述健康和损伤的四结点有限元板壳单元模型；基于Green函数理论，将结构所处的流体环境考虑为无粘、无旋、不可压缩的理想流体，推导了三维问题拉普拉斯方程的基本解，并利用边界元方法将流体对结构的影响归结为对结构整体质量矩阵的影响；针对各向同性损伤单元，采取刚度各向整体弱化的方法分析；对于各向异性损伤单元，采用Kachanov理论，引入了x和y两个方向的弹性损伤折减系数。

Have same aimless direction.just like this life.have noway to Take out on.

有着同样漫无目的的方向，只是这样过着过着，没有一个发泄口。

This will allow for an interval that's unbounded in one direction.

这样可以使用在某个方向无界的区间。

Labor vanquished all,--not inconstant, spasmodic, or ill-directed labor ; but faithful, unremitting, daily effort toward a well-directed purpose, Just as truly as eternal vigilance is the price of liberty, so is eternal industry the price of noble and enduring success.

劳动征服一切－这里所指的劳动，并非变化多端的，断断续续的或者偏离方向的劳动；而是实在的，持续的，朝着正确方向而每日坚持不断的努力。正如自由的代价是无休止的警惕，永无止境的勤勉则是获得崇高而持久的成功所必须付出的代价。

In the fern allies, there was no obviously evolutional trend among the mycotrophic, facultative mycotrophic and autotrophic, however, the evolutionary trend may be from the mycotrophic to facultative mycotrophic, and at last to the autotrophic which got rid of mycotrophism in the filicophytes

在拟蕨类植物中，VA菌根营养、兼性菌根营养和自养之间无明显的进化趋势；而在真蕨类植物中，则由VA菌根营养向着兼性菌根营养到最后摆脱菌根营养而行自养的方向演化

Confusion about where you are and how to proceed; uncertainty as to direction disoriented

a。 分不清方向或目标的，无判断力的

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。