在互易原理的基础上，得到了计入相邻目标二次散射的散射场的积分表达式。
The integral expressions for scattered fields including the second-order scattering terms are given based on the reciprocity theorem.
结果表明埋藏在沙土中的导体球面不仅仅存在一次和二次散射波，而且还存在多次波和爬行波。
Results the calculation result shows that spherical surface of the conductor buried in sandy soil presents not only primary and secondary scattered waves but also multiple wave and creeping.
进一步的数值分析表明在讨论入射点附近的偏振特性时单次散射和二次散射近似模型具有很高的有效性。
Further quantitative analyses show that single scattering approximation and double scattering approximation are quite accurate when discussing the polarization patterns near the incident point.
采用激光散射法原理设计的测量装置测量蒸汽湿度和水滴直径，并且给出了一次水滴和二次水滴的具体测量方法。
A measuring facility has been designed by using the principle of laser scattering method, and the concrete measuring method for primary and secondary water droplet being given.
根据2003年几次强对流天气的观测资料，对其中三体散射长钉、二次回波旁瓣回波等虚假回波进行了分析。
The analysis of the virtual echo such as three -body scatter spike echo, the secondary echo, the side -lobe echo is given echo based on observational re cords of severe convectional weather in 2003.
采用电子背散射衍射（EBSD）技术和TEM技术对IF钢二次加工脆性与晶界结构之间的关系进行了研究。
The effect of grain boundary structure on secondary working embrittlement (SWE) of IF steels was studied by electron back-scatter diffraction (EBSD) and TEM.
将要讨论的技术包括：波长和能量色散谱，扫描背散射电子，二次电子，阴极射线磷光和X射线成像。
Techniques to be discussed are wavelength and energy dispersive spectrometry, scanning backscattered electron, secondary electron, cathodoluminescence, and X-ray imaging.
将要讨论的技术包括：波长和能量色散谱，扫描背散射电子，二次电子，阴极射线磷光和X射线成像。
Techniques to be discussed are wavelength and energy dispersive spectrometry, scanning backscattered electron, secondary electron, cathodoluminescence, and X-ray imaging.
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