This paper deals with basic concept and method of spectral analysis for pressure fluctuations.
本文讨论压力脉动谱分析的基本概念与计算方法。
Experiencing education of young pioneers is the basic concept and method to expand young pioneers moral practice.
少先队体验教育是少先队开展道德实践活动的基本理念和基本途径。
The Physical Optics (PO) method and the method of Equivalent Currents (MEC) are discussed starting with the concept of RCS and the basic theory of electromagnetic scattering.
本文从雷达散射截面(RCS)的概念及基本电磁散射理论入手，讨论了计算rcs的物理光学法和等效电磁流法。
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