优缺点

Get the lead-in of AD HOC from various technical merit and shortcoming of safe problem within a network technique.

得出了AD HOC 无线自组网络技术中的安全问题各种技术的优缺点。

Orthogonal polynomials with weight equaling 1 are used to make least square approximation, so morbidity phenomenon in solving equation is avoided and better results can be obtained. Advantages and disadvantages of Legendre polynomial and Gram-Schmidt polynomial are also discussed.

比较了Legendre多项式和Gram-Schmidt正交化构造的多项式在处理时间漂移方面的优缺点，并介绍了通过随机误差的平稳性来检验处理结果优劣。

In the paper, on the basis of aggregation of previous studies, the development of optical technology and development trends at home and abroad are introduced, the principle of Fresnel lens is summarized. In accordance with its principle, circle equidistant steps Fresnel lens design is described. And on this basis, based on Fresnel design, also based on a continuous upward spiral of the plane curve concept, incidence surface and the backlight is set up to greet Archimedes - Fresnel lens design formula and the Second parabolic type Fresnel lens design formula, and on this basis, the advantages and disadvantages of the three designs is discussed.

本文在充分了解非球面光学技术在国内外的发展状况和趋势的基础上，同时从菲涅尔透镜的光学原理出发，并根据它的工作原理推导了圆环等距菲涅尔透镜的设计步骤，并在此基础上依据菲涅尔的设计思想，同时依据平面曲线的连续又呈螺旋的构思，推导出了迎光面和背光面阿基米德型菲涅尔透镜的设计公式和二次抛物面型菲涅尔透镜的设计公式，并在此基础上讨论了这三种设计各自的优缺点。

The excellent and defect of gray clustering model s in existence were analyzed and the mechanism of the original model was demonstrated in the letterpress.

分析了现有主要灰色聚类模型的优缺点，论证了灰色聚类原模型的机理。

We consider two different systems, one is stable linear system, the other is stabilized linear system.

并通过详细真实的数值实验结果分析了每一种算法的优缺点。

The principle,advantages and disadvantages of various linearization techniques are discussed.

本文首先从理论上分析了功率放大器的非线性特性，介绍了目前各种线性化技术的原理和优缺点。

Focusing on the characteristics of methane, namely its advantages and disadvantages as a liquid propellant.

重点论述了甲烷的特点及它用作液体燃料的优缺点。

The methods for preparation of lithium hexafluorophosphate were reviewed, and their advantages and disadvantages were discussed.

综述了六氟磷酸锂的生产方法，并且讨论了它的优缺点。

The paper gives a detailed introduction to the classification and mothed of image edge detection from the traditional point of view,that is,the robert operator based on the maximum gradient detection,the sobel operator,the prewitt operator,the canny orerator,the laplancan operator based on the detection of second derivative of the zero-crossing point and then log operator.The paper makes a summary and analysis to the principles and applications,advantages and disadvantages of each algorithms and operators. Especially the canny operator.

本文首先介绍了图像边缘检测在国内外的发展，图像边缘检测的重要性及意义，阐述了图像边缘检测的原理，从传统的角度详细介绍了的图像边缘检测的分类及方法，即基于检测梯度最大值的robert算子，sobel算子，prewitt算子，canny算子，基于检测二阶导数的零交叉点的laplacan算子及log算子，对各种算法和算子的原理及用法及优缺点做了总结和分析尤其是canny算子。

This paper analyzes the example of design PLC ladder diagram by predicate logic method,and illuminates relative merits.

使用谓词逻辑法举例分析PLC梯形图的编制过程，并分析其优缺点。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。