等价矩阵

Secondly, the sufficient condition for the existence of memoryless state feedback controller with definite attenuation and the method of designing controller are derived. The condition is also further equivalent to the solvability of certain linear matrix inequality.

其次得到了具有指定衰减度的无记忆状态反馈控制律存在的充分条件及相应的控制器设计方法，该条件被进一步等价地转化为一个线性矩阵不等式的可解性问题。

Based on the propagation and transformation law of Wigner distribution function through a general axially nonsymmetrical optical system,investigated is the transform relationship of WDF between the input and the output planes of a pair of cylindrical lenses system which is used widely in optical signal processing .

基于维格纳分布函数在一般非轴对称系统的传播和变换规律，讨论了在光学信息处理系统中常用的双柱透镜系统输入和输出面WDF之间的变换关系，在直角坐标中给出了联系该系统相空间坐标的维格纳分布函数的坐标变换关系式和等价的矩阵表示。

Firstly, we introduce some background knowledge about singular linear systems, give the definition and equivalence conditions of the semiconvergence.

先介绍了奇异矩阵线性方程组的一些背景知识，给出了半收敛的概念及其等价条件。

Via basic and descriptor adverse transformation of matrix, an equivalent standard linear system is derived. Sufficient and necessary conditions are established for observers with disturbance decoupling and LTR in systems. Analysis showed that the necessary and sufficient condition for observers with LTR is disturbance decoupling to any undnown inputs. So it is con verted to the problem that observers are designed with disturbance decoupling.

通过矩阵的初等变换和广义逆变换，将非方广义系统等价地转化为正常状态空间的广义线性系统，并运用有关定理给出观测器具有干扰解耦和环路复现特性的充要条件，经分析可知，系统具有环路复现特性的充要条件是系统对于任何未知输入干扰解耦，则具有环路复现特性的干扰解耦观测器的设计问题转化为系统关于任何扰动都是解耦的。

The optical potential of a nucleon in the nuclear medium is identified with the nucleon self-energy.

核子的光学势等价于核子在核介质中的自能，论文中RMOP的实部用G=V+AG在DBHF方法下计算得到，虚部则采用二级G矩阵极化图的虚部。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。