回波效应是由1974年诺贝尔经济学奖获得者冈纳·缪尔达尔(Gurmar Myrdal,)提出的。所谓的“回波效应”是指经济活动正在扩张的地点和地区将会从其他地区吸引净人口流入、资本流入和贸易活动,从而加快自身发展,并使其周边地区发展速度降低。回波效应是指别国由于”溢出效应”所引起的国民收入增加,又会通过进口的增加使最初引起“溢出效应”的国家的国民收入再增加。
研究了简并二能级系统的受激光子回波效应。
The stimulated photon echo in degenerate two-level system has been studied.
详细讨论了不同入射角和不同分维及遮蔽效应对分形海面散射回波多普勒谱的影响。
The influence of different incident Angle, different fractal dimension and shadowing effect on the Doppler spectra of the echo from the fractal sea surface is discussed in detail.
本文通过所建立的采样比率模型对多目标的距离闪烁效应进行了理论分析,并从回波频谱畸变的角度解释了其物理本质。
In this paper, the range glint is analyzed in theory through the model of sample ratio established, and then its physical essence is also expatiated using echo spectrum aberration.
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