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Based on the fact that the h〓 and h〓 of a 2-band PR-QMF and their evenshifted versions make an orthonormal basis in L〓, a class of N×N matrices were constructed.

利用两子带PR-QMF的h〓和h〓及其偶数平移构成L〓上的基函数这一事实，构造了一类N×N的正交矩阵。

Diketoreductaseis a class of new enzyme, and compared with other oxidoreductase, whose uniqueness lies in its ability to restore at the same time reduced to two hydroxy carbonyl and a high degree of stereoselectivity.

双羰基还原酶（Diketoreductase，简称DKR）是一类全新的酶，与其他的氧化还原酶相比，其独特之处在于它能够同时还原两个羰基还原成羟基，并有高度的立体选择性。

In this dissertation, we develop the research work of the following three aspects based on existed work.First, using the scale-invariant property of multiscale model, i.e. Markovian among scales, a method of qth-order tree-based for multiscale representation of a class of 1-D stochastic process is presented. The multiscale stochastic model is established. The representation forms of parameter matrices, such as, the state transition matrix, the disturbance matrix, the initial state and the corresponding covariance matrix are deduced in detail. The multiscale sample paths based on distinctive order tree are presented by computer simulation.

本文在已有工作的基础上，开展了以下几个方面的研究工作： 1、根据多尺度模型尺度不变性，即利用尺度间的Markov性，给出了一类1-D随机过程基于一般q阶树的多尺度表示方法，建立了相应的多尺度动态模型，详细推导了多尺度模型中的状态转移阵、扰动阵、初始状态和相应的协方差阵，并通过计算机仿真给出了不同阶树的多尺度采样路径。

Based on the proposed analytical general solution of the second-order Sylvester matrix equation,a parametric method of the state feedback eigenstructure assignment in a class of vibration second-order linear systems is presented.

基于二阶Sylvester矩阵方程的解析通解，给出了振动二阶线性系统的状态反馈特征结构配置设计参数化方法。

Based on the proposed ana- lytical general solution of the second-order Sylvester matrix equation, a parametric method of the state feedback eigenstructure assignment in a class of vibration second-order linear systems is presented.

基于二阶Sylvester矩阵方程的解析通解，给出了振动二阶线性系统的状态反馈特征结构配置设计参数化方法。

The concept and the properties of partial fractal mapping are presented and discussed, which leads to a general theory and framework of a class of hybrid image coding systems.

3提出并讨论了部分分形映射的概念和性质，给出一类混合图像编码系统的通用理论和算法框架。

Pectate and pectin lyases are a class of polysaccharide lyases produced by a diverse group of organisms including bacteria, fungi, plant and nematodes. Various pectate lyases and pectin lyases are divided into five families.

果胶裂解酶包含果胶酸裂解酶和果胶酸酯裂解酶二种形式，是一类多糖裂解酶，由细菌、真菌、植物和线虫等生物产生，分布在5个多糖裂解酶家族，果胶酶在食品与饮料、纺织与洗涤、制药等工业中有广泛的应用。

This paper considers a class of uncertainties with the polynomial function form of perturbation parameters, which is analogous to a fact that part information is known for some uncertainties.

考虑一类与摄动参数呈多项式函数关系的不确定性模型，这类模型反应了预知部分不确定性信息的物理意义。

A kind of stability method is presented for a class of uncertain nonlinear system with perturbation and time delay.

针对一类有参数摄动和时延的非线性不确定性系统，提出了一种稳定性分析方法。

In view of a class of nonlinear singular perturbed system which can be typically evolved into two time scales, a Composed control law for trajectory maneuver is researched by applying feedback linearization, in two steps, to inner loop and outer loop.

对于一类具有典型双时标特性的非线性奇异摄动系统，应用反馈线性化理论分内环控制和外环控制两步进行了轨道机动的组合控制规律设计。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷