Based on Normal Mode theory, the explanation of sound field fluctuation characteristic caused by internal waves is given.
基于声简正波理论，给出了内波导致声场起伏特性的一般理论解释。
Sound power determination in reverberation chambers is discussed in the light of normal mode theory. Rigorous as well as statistical formulas are found, and the aged problem of.
用简正振动方式理论分析了混响室内声功率测定问题，求得了严格公式和统计公式，解决了测试中多年未有定论的问题。
According to social network analysis theory, a large number of abnormal behaviors are always hidden in the normal mode of behavior.
根据社会网络分析理论，异常行为总是隐藏在大量的正常行为模式中。
Based on wave propagation theory, the paper describes briefly basic principle of several acoustic propagation models, and discusses detailedly foundation of coupled normal mode.
在波动传播理论的基础上，简要介绍了几种主要声传播模型的基本原理，并着重对简正波模型进行了研究。
The thesis is based on the interrogating theory of the normal mode and mode S and focuses on the design and implementation of the tester.
本论文以常规模式和模式S询问信号的理论为背景，重点阐述了测试仪的设计方案及实现。
Density functional theory calculations were carried out to examine the structure and normal mode frequencies of the ground state of the complex and its electronic transition energies.
用密度泛函方法计算了复合物的基态结构、振动频率和电子跃迁能。
Density functional theory calculations were carried out to examine the structure and normal mode frequencies of the ground state of the complex and its electronic transition energies.
用密度泛函方法计算了复合物的基态结构、振动频率和电子跃迁能。
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