The maximum output power of an optical fiber laser using conventional single core fiber is only several kilowatts due to the nonlinear effect in fiber and the limited cross -section of fiber core.

由于受到纤芯面积、非线性效应等因素的限制，单芯光纤激光器的输出功率极限值为千瓦级。

The results of numerical simulations indicate that the crack in rock salt is opened like the shape of sector during fracturing, and the relation among crack width , distance and time is nonlinear.

数值模拟结果表明，在水力压裂过程中，岩盐水力裂缝呈扇形张开，其裂缝宽度与离开注水井口的距离及时间成非线性关系；

Generally speaking, it's difficult to find the exact solutions and there are few researches on this subject can be found, so it's very attractive to study on how to solve the nonlinear equations.

本文正是以非线性发展方程的行波解为基础，探讨了几种重要的求解精确解的方法，并求出一些新的非线性发展方程的孤立波解和精确解。

In this article, by use of basic concepts of the weighted space distance, a set of locally linearized models is simply and effectively combined into a global description of a nonlinear plant.

本研究藉由空间距离权重的概念，提出简便且有效的方法，结合一组局部线性化模式成为一整体的模式，可准确地代表线性程序。

When images are denoised by means of nonlinear filtering algorithms, the selections of the threshold parameter and the filter function tend to have great effects on the quality of the denoised images.

采用非线性滤波方法处理图像去噪问题时，阈值参数的选取和滤波器函数的使用对去噪图像的效果影响极大。

The linear and nonlinear examples indicate that the second effect of the axial force on the analysis of the inner force and displacement of the slightness members' structure can not be neglected.

线性和非线性算例均表明轴力二次效应对细长构件结构内力和位移的影响不能忽视。

It is no need for this algorithm to linearize the nonlinear system and to decouple the strong-coupling MIMO system. It is also convenient to use the penalty function to solve the restriction.

该算法对非线性系统不需要进行线性化，对带强耦合的MIMO系统不需要解耦，使用罚函数处理约束也非常方便。

Simulation results show that the nonlinear internal model control structure brings into a good play in a wide range of load units and has a better decouple and disturbance rejection properties.

在不同负荷下的仿真试验表明，所设计的控制系统具有良好的解耦效果和抗干扰能力。

The influences of losses in optical transmission systems on carrier optical signal propagation are studied by using the conservation law and the viral theorem of the nonlinear system in this paper.

文章采用非线性系统的守恒律和位力定理对光传输系统中损耗对载波光信号传输的影响进行了研究。

It is shown by the comparisons between numerical results and experimental data that the numerical model can be used to simulate accurately nonlinear wave forces on ship section in a harbor.

数值计算结果和实验结果对比表明此模型能精确模拟波浪对船的作用力。