水中污染物在水中生物（主要是水中微生物）的 作用下，其性质或存在位置（状态）发生变化。其主 要过程就是水生物对水中污染物的利用过程。主要原 因是水中生物将某种（些）污染物作为自己的食物及 营养（能量）的来源，它们消耗利用了水中的这种 （些）污染物，起到了净化水质的作用

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Yariv Ephraim ATeT Bell Laboratories George Mason University Jesse W.Fussell General Approaches. Model Adaptation. Analysis-by-Synthesis. Department of Defense Particular Implementations. Speech Quality and Intelligibility Standardiza Variable Rate Coding. Summary and Conclusions Lynn D. Wilcox FX Palo Alto Lab

14.1 Fourier Transforms Introduction. The Classical Fourier Transform for CT Signals. ion of CT Periodic Signals.Generalized T Fourier Transform.Relationship e Fourier Transform 14.2 Fou er Transform lationship to the Finite Time W. Kenneth Jenkins University of Illinois Amplitude,and Phase Alexander D. Poularikas

9.1 Introduction Richard C. Dorf 9.2 Three-Phase Connections University of California, Davis 9.3 Wye Delta Transformations 9.1 Introduction Two very important two-ports are the T and II networks shown in Fig. 9.1. Because we encounter these two

5.1 Diodes and Rectifiers DiodesRectifiers Jerry L. Hudgins 5.2Limiters University of South carolina Limiting Circuits. Precision Rectifying Circuits Theodore. Bogart, Jr. 5.3 Distortion Harmonic Distortion.Power-Series Method.Differential-Error University of Southern Mississippi Method Three- Point Method. Five-Point Method

3.1 Voltage and Current Laws Kirchhoff's Current Law. Kirchhoff's Current Law in the Complex Domain.Kirchhoff's Voltage Law. Kirchhoff's Voltage Law in the Complex Domain. Importance of KVL and KCI Michael D. Ciletti 3.2 Node and Mesh Analysis University of Colorado Node Analysis. Mesh Analysis. Summary 3.3 Network Theorems J. David Irwin

20.1 Definitions and Scope Introduction. Definitions and Style of Computation. ANN Types and Applications 20.2 Multilayer Perceptrons Function of Each PE. How to Train MLPs Applying Back- Propagation in Practice. A Posteriori Probabilities 20.3 Radial Basis Function Networks 20.4 Time Lagged Networks Memory Structures. Training-Focused TLN Architectures

本书内容分为：行列式、矩阵及其运算、矩阵的初等变换与线性方程组向量组的线性相关性、相似矩阵及二次型、线性空间与线性变换等六章，各章均配有一定数量的习题，书末附有习题答案。其中一至五章（除用小字排印的内容外）符合教学基本要求，教学时数约34学时。一至五章中用小字排印的内容供读者选读，第六章较多地带有理科的色彩，供对数学要求较高的专业选用

提出了一种运用模糊集理论中的隶属函数确定“正常应激水平”的范围的方法.采用不同的问卷手段可以获得必要的数据，即被试在某种应激条件下感受到的应激状态水平.还给出了可供参考的正常应激水平范围的边界点