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Based on coupled nonlinear Schr?dingar equation, the numerical solutions of pulse propagation in fibers were obtained with Split-step Fourier Method.

本文以耦合非线性薛定谔方程为理论模型，采用分步傅立叶方法进行数值计算，仿真研究了满足特定要求的多程放大系统前端脉冲经光纤传输后引起失真的原因。

The intermediates were coupled respectively with derivatives of gallic acid to give polysubstituted diphenylmethane.

发现邻甲氧基苯甲酸甲酯中酯甲基可以被正丁基锂和仲丁基锂中烷基交换生成相应的酯，反应的机理不明确。

Moreover, the rotational states of coupled free and adsorbed molecules with dipolar interaction are further studied. It is shown that the orientation is significantly different from that of an isolated one due to the dipole-dipole interaction.

同时，我们也进一步探讨耦合自由与吸附分子的转动能态，发现其分子偏向与单一吸附分子的偏向有相当不同的差异性，原因是来自於分子间偶极作用的影响。

For the fermentation coupled with distillage recycle,every five days,the total backset distillage collected was directly used to mix the corn powder,and the experimental results revealed that the concentrations of ethanol,residual reductive sugar,inorganic phosphate and total solids in the broth were maintained s.

实验结果表明，在稀释速率0.05 h-1，废糟液全循环条件下，装置达到稳定状态后，乙醇、残还原糖、无机磷、无机氮、蛋白和总固型物浓度分别稳定在9.4%、26 g/L、11 g/L、3.36 g/L、0.136 g/L和85 g/L左右；乙醇浓度与对照组相差不大，但残还原糖、无机磷及总固形物在废糟液循环使用的初期出现积累，但随运行时间的延长而趋于稳定，说明对酵母生长和乙醇发酵没有产生明显影响。

Results The in vitro coupled bacterial luciferase:FMN-NADH oxidoreductase bioluminescent system was: 1mL crude extract, 27 mmol/L Dodecane 100 μL, 10 mmol/L FMN-Na 0.5 μL and 0.14 mmol/L NADH 300 μL.

利用从鳆发光杆菌提取并经部分纯化的荧光素酶和FMN-NADH氧化还原酶，通过优化体系中各底物的添加量，实现荧光素酶的体外发光。

As an example, two Duffing oscillators coupled with linear and nonlinear stiffness terms are investigated.

作为例子，考察了两自由度线性与非线性刚度耦合的Duffing振子，证明了其响应的非高斯特性依赖于脉冲平均到达率和系统弛豫时间的乘积，并用Monte Carlo模拟验证了该方法的可行性。

FBG sensing technology and its recent progress in applications isintroduced systematically;the coupled-mode theory and the sensing principleof FBG are expatiated and the Bragg formula and reflectivity formula arededuced;the work principle, variety and essential characteristic of PZT areexpatiated in detail, and the configuration of PZT parts of an apparatus issummarized. The mechanism of piezoelectric electrostriction is analyzeddeeply, and the normalized control model is introduced aiming at analyzinghysteresis characteristic, and an electrical polarization intensity control methodbased on the aforementioned model which can effectively reduce the hysteresischaracteristic is discussed.

论文系统地介绍了光纤光栅传感技术及其应用的研究进展状况；详细地阐述了光纤光栅的耦合模理论及光纤布喇格光栅的传感机理；推导出了光纤布喇格光栅的布喇格公式和反射率公式；详细地阐述了压电陶瓷的工作原理、种类和基本特性，总结了压电陶瓷器件的结构形式，深入地分析研究了压电陶瓷逆压电效应及电致伸缩机理，并针对其迟滞特性给出了压电陶瓷归一化控制模型，在此模型基础上采用电极化强度控制方法有效地降低了压电陶瓷的迟滞特性。

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。

In view of inhomogeneous distribution of fluid pressure, fault-valve behavior and the coupled equations of the current density and fluid flow within the Earth's crust, especially, the observed anomalies in electrical field showed a similar pattern of rapid starting and slow decay, some of these anomalies associated with episodical spouting from borehole or the increase of fluid pressure in wells, it is reasonable to consider that the source of precursory electrical field anomalies is the streaming potential mechanism.

鉴於地下流体压力分佈不均匀、断层阀作用及地下电流密度与流体流的耦合方程，特别是由於电场异常显示出快急始慢衰减的特殊图型，电场异常有的与废油井间歇自喷有关，有的与流体压力增高有关，故认为过滤电势作为电场前兆机制是合理的。

And according to designer Erick Boenisch, EA's identity crisis, coupled with the return of Wang, looks to tip the scales even further in 2K's direction.

根据设计师，EA的身份Boenisch三星危机，加上回归的王建民，决定在2K进一步的方向。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。