查询词典 wave mode

Influence of beam turning error of pentagonal prism on wave-front measurement［J］.

五角棱镜的光束转向误差对波前测量的影响［J］。

And others waxing hopeful that the next wave of Internet progress is finally starting to percolate.

并让其他人逐渐希望下一波的网络发展浪潮正最终开始涌现。

This paper analysized the relationship between sampling frequency fs and the taps N of low pass filter in A/D transform and got a formula expression, which can give reference to the parameter design of quadrature sampling.; aiming at the wave distortion in traditional arithmetic of quadrature sampling with pulse compression, an improved algorithm has been studied and validated in Matlab and get perfecter result. In order to enlarge the detect distance of Radar, a method of part pulse compression is put forward, the realistic sense and the implement scheme is analysized.

本文分析了在正交插值前端A/D变换中采样率的选择与正交插值低通滤波器的阶数的关系，得到公式化的表达式，可为正交采样参数设计提供参考；针对传统的正交插值及脉冲压缩算法中的波形畸变提出了改进方案，并通过仿真实验得到较好的效果；为扩大雷达的探测距离，提出部分脉压的方案，详细分析了其理论意义及实现方法。

Xi ′ an Jiaotong University, Xi ′ an 710049, ChinaAbstract : Propagation of generalized Rayleigh wave in a layered piezoelectric structure with initial stress is investigated. It involves a thin elastic layer bonded perfectly to a piezoelectric elastic substrate.

摘 要：通过求解考虑初应力时的耦合波动方程，研究了覆盖层为各向同性材料、基底为横观各向同性压电材料的压电层状结构中广义Rayleigh波传播时初应力和相速度的关系。

Perilla seed oil was extracted from the perilla seed by using ultrasonic wave assisted extraction technology. The antioxidantion effects of different antioxidants, such as TBHQ, BHT, and VE were compared with each other by using the Rancimat method.

以紫苏子为原料，利用超声波辅助提取技术提取苏子油；用Rancimat法比较TBHQ、BHT和VE等不同抗氧化剂单独作用及复配时对苏子油的抗氧化作用。

In the year of El-Nino, the shortened main period of wave oscillation in summer is clearer than that in winter.

4El-Nino事件，夏季的波动振荡主周期比冬季主周期缩短明显。

He says, new round of periodic change element is very much, shipping transport power is supplied, dock is managed, wave motion of boat price change, freight.

他说，新一轮周期的变化因素很多，船舶运力供给、码头经营、船价变化、运费波动等。

Bring about the element that the periodic wave motion of semiconductor market becomes more warm, include inventory to administer improvement, produce the flexibility that can administer improvement and memory production to rise.

导致半导体市场的周期摆荡变得加倍暖和的身分，包括库存治理改善、产能治理改善和内存出产的灵敏性进步。

Using characters of periodic fading of channel in frequency selectivity, the invented method partitions orthogonal FDM modulation sub carrier wave into some sub bands in two types crossed arranged to be assigned to two typed users.

一种正交频分复用调制子载波分割与子带交叉排列的方法，用于数字信息传输技术领域。

Be this kind of relation and its motion, brought about the periodic wave motion of real economy.

正是这种关系及其运动，导致了现实经济的周期性波动。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。