wave modes

The project just do research on using certain guided wave modes to detect the pipe flaw.

本文正是针对这一课题深入研究了纵向超声导波技术及其检测管道缺陷的方法.

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As the control modes of DDS special chips are changeless, users are difficult to get frequency modulation wave what they need.

DDS专用芯片的控制方式固定不变，用户难以获得所需要的调频波；

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Distribution of uncoupled piezoelectric surface wave modes in point group

去耦的压电表面波模式在点群中的分布

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Using transfer matrix method with rate equations and couple wave theory, We present threshold analysis of two electrodes DFB diodes. With collateral arithmetic, we present several modes characteristics in threshold conditions.

用传输矩阵法分析了双电极DFB激光器的阈值特性，在分析中我们运用了速率方程理论结合耦合模理论，用并行算法给出了各个模的阈值特性。

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In this form the traveling-wave nature of the individual modes and their explicit time dependence are brought out.

这种形式的表达式显示出各个模的行波特性及它们显含时间的关系。

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Then, the SEA parameters of each cabin are gotten by solving the SEA model, such as SPL, modes, modal density, energy density, wave number and so on.

然后求解统计能量分析模型，可以得到各舱室的统计能量分析参数，如声压级水平、模态数、模态密度、能量密度、波数等。

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