衍射理论的另一个重要应用就是研究准直光束的远场发散角。
Another important application of diffraction theory is the study of the far field divergence Angle of a collimated light beam.
可是，由于存在着多种影响收敛和发散的机制和力量，至今，我们仍难以用一个完整的理论来解释各国（地区）的经济增长经验以及兴盛、衰落。
Since there exist many kinds of mechanism and force working on convergence or divergence, we can hardly use one integrated theory to explain the development of economy up to now.
根据捕获跟踪策略和激光检测理论，给出了直接探测情况下最佳光束发散角的表示式。
According to acquisition and tracking strategy and laser detection theory, an expression of the best Angle of beam divergence under direct detection is provided.
对于一维电子系统来说费米液体理论也不是一个好的模型，因为当应用多体微扰讨论时有红外发散，使这种最常用的方法失效了。
But it's not a much appropriate model on one-dimensional systems because of infrared divergences when many-body pertebation theory is used, thus this normal solution failed.
对发散光束抽运的光参量啁啾脉冲放大器的增益带宽进行了系统的理论研究。
The gain bandwidth of optical parametric chirped pulse amplification pumped by divergent beams has been theoretically studied.
并以鄱阳湖为例，运用物元理论进行指标体系生成的发散过程，形成了初始指标集。
As a case study of Poyang Lake, the divergent process of the indicator system formation has been made to establish the initial indicator set by using the matter-element theory.
推荐铁路列车运行噪声几何发散损失计算采用偶极子指向性特性的理论计算公式或简化公式。
It recommends that the calculation of geometrical spreading loss of running trains noise adopt the theories calculation formula or the simplified formula of directional characteristic of dipole.
根据基本声学理论，分析具有单极子、中间和偶极子三种指向性的有限长线声源的几何发散损失特性。
Based on the theory of acoustics, this paper analyzes the character of geometrical spreading loss of finite line sound source on three types of directivity-monopole, intermediate pole and dipole.
经过理论试算和实际处理表明，本方法能较好地消除球面发散和大地吸收对振幅的影响。
Theoretical and practical results indicate that the method can compensate quite desirably the amplitude attenuation due to spherical divergence and earth absorption.
报道了一种具有垂直集成无源波导的耦合波导结构量子阱激光器的理论设计，它可以使垂直结平面方向的远场光束发散角得到有效的降低。
In this paper, the theoretical design for the quantum well lasers with vertically integrated passive waveguides, which decreases the vertical beam divergence effectively, are reported.
阐述可拓学理论发散树思维方法的机械产品概念设计。
This paper discusses the conceptual design for mechanical products of Divergence Thinking method.
阐述可拓学理论发散树思维方法的机械产品概念设计。
This paper discusses the conceptual design for mechanical products of Divergence Thinking method.
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