耦合

Based on the coupling of the bichromatic field, we observed a large four-wave mixing signal in cold atoms under non-resonance condition, the measured maximum conversion efficiency was about 18%.

在双色场耦合基础上，设计实验在冷原子中观察到非共振耦合情况下的弱光四波混频信号，测到的转换效率为18%。

Taking the integrated bioreaction and separation process as guide, a new technique, viz. the technique of in situ product removal based on the adsorption of the product by macroreticular resin JD-1 directly from the fermentation broth, was developed for pristinamycins production.

以生物反应与分离耦合的集成化思路为指导，建立了以JD-1大孔吸附树脂直接从发酵液中吸附分离目标产物的原位分离技术并耦合普那霉素发酵的新方法。

Chapter Ⅴ establishes the spatial model of the medium-low speed maglev vehicle to calculate the lateral dynamic response in the cases of passive guidance and active guidance, the centrically arrangement and offset arrangement of electromagnets. As a result, the comparative analyses indicate active guidance can improve evidently the lateral dynamic performances of maglev vehicle.

本文第五章建立磁浮车辆系统的空间耦合模型，并考虑电磁力的空间耦合作用，比较研究了主动、被动导向和电磁铁横向对中、错位布置下磁浮车辆的横向动力性能，为低速磁浮车辆电磁铁导向结构设计及控制方式的参数选取提供动力学理论依据。

In chapter 2, the intensity and phase formulae of five photorefractive processes in intermediate regime are derived including the analytic expressions of codirectional parallel-or cross-polarization two-wave mixing in the depleted pump condition and the analytic expressions of contradirectional parallel-or cross-polarization two-wave mixing and degenerate four-wave mixing in the undepleted pump approximation.

给出了本文的结构和取得的主要结果。第二章推出了五种光折变过程的中间段强度与相位公式。既同向平行、交叉极化双光束耦合的大信号解析公式，异向平行、交叉极化双光束耦合以及简并四波混频的小信号解析公式。

Based on the theory of interaction of fluid-solid, the coupled FEM equation considering compressible water is deduced.

基于流固耦合理论，推导了可压缩水体的耦合有限元方程。

In this paper, a new method of obtaining multi-coherent-beams by UR90 resonators coupled with forward-mode was given, by which a problem was called "detune" existing in method of backward-mode was resolved, and the reliability of system was enhanced obviously.

用多个UR90腔进行正向模耦合的方法来产生多束相干的激光，解决了反向模耦合中存在的失谐问题，可以大大提高系统的可靠性。

It points out that it must use unsaturated soil theory to consider the stabilization of construction established on loess and dilative soil subgrade. It uses single-phase flow theory and neglects the effect of porous air to describe the flow in unsaturated soil. The saturation of water and pore water pressure are taken as state variables, the effective stress and water flow velocity are expressed using these variables.

对于非饱和渗流孔隙水压力-位移耦合分析问题，本文采用单相流理论，忽略孔隙气压力的变化及其对土体变形的影响，以孔隙水饱和度和孔隙水压力作为状态变量，给出了非饱和土的应力状态表达式、渗流特性，建立了非饱和流孔隙水压力-位移耦合分析的有限元程式。

Comparing to single rf source CCP, ion flux and electron flux will be influenced by both of the sources in the dually rf driven CCP. Therefore, particles in plasma behave more complicated.

与单频电容耦合放电相比，在双频电容耦合放电等离子体中的离子和电子受到的是两个不同频率的射频偏压的调制，从而使等离子体表现出更为复杂的运动行为。

Laser light travelling in a medium such as an optical fiber, the variations in the electric field of the beam itself may produce acoustic vibrations in the medium via electrostriction.

他们用两个2ns的&数据&脉冲前后耦合入玻璃光纤的一端，来模拟两个几乎同时到达的信息包，同时将一1.5ns的&写&光脉冲耦合入另一端。

Third, it has a discussion on the development of modern and traditional artificial neural network technology and their application in image processing. It summaries that the model of the Pulse-coupled neural network based on Elkhorn's model of the cat visual cortex was constructed according to the mammalian vision systems. The nonlinear modulation property, which is a generic and pervasive biological pulse-coupling mechanism, is used in the construction of PCNN. So, PCNN finds many applications in image processing, including segmentation, edge extraction et al. As all known, the performance of the image segmentation depends not only directly on the adjustment of PCNN parameters and the statistical properties of image but also on the cyclic iteration times N of PCNN. If the parameters have been properly set, it turns out to be essential to select a suitable criterion to determine N.

回顾了神经网络技术的现状，指出传统人工神经网络只利用了生物神经元有限的属性进行模型构建，而90年代产生的脉冲耦合神经网络充分利用了哺乳动物视神经网络特有属性，其神经元模型除了考虑生物神经元特有的线性相加、兴奋与抑制属性外，还考虑到生物神经元特有的非线性相乘调制耦合特性；考虑了哺乳动物视神经系统视野受到适当刺激时，相邻连接神经元同步激发产生35Hz～70Hz振荡脉冲串特性等，所以PCNN网络模型更靠近真实生物视觉特性，特别是哺乳动物视神经网络，特别适合计算机图像处理应用，尤其在生物细胞图像分割、图像平滑、降噪及图像中目标的分类、计数等方面的研究。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。