零点

The concept of zero-path tracking in homotopy is generalized into minimum-path tracking and a new method for the training of multi-layer perceptron is thus put forward──the homotopic BP algorithm. An analysis is made on the convergence property of the proposed method.

采用同伦BP算法进行多层前向网络的训练高小榕，杨福生（清华大学电机及应用电子工程系北京100084）摘要本文把同伦论中零点路径跟踪的概念推广到多层前向网络能量函数极小点路径的跟踪，从而提出多层前向网络一种新的训练方法──同伦BP算法（包括教师同伦和输入同伦），并且分析了其收敛性质。

Non-condition stability means the radixes of character equations couldn't reach the imaginary axis while the increasing of τ from 0 to+∞.

无条件稳定意味着τ从0增加到+∞的整个过程中，特征方程的零点不能达到虚轴。

The equilibrium states and the transition state have been verified according to the number of imaginary frequency through vibrational analysis.

通过振动分析对平衡态和过渡态进行了验证，并得到了零点能。

The proofs of the Zero theorem and indefinite integral ∫(superscript 1)(subscript 0)e(superscript -x^2) are given by research learning method.

本文论述了如何应用研究性学习方法证明零点定理及不定积分∫e(上标-x^2)dx，其方法简便，理论性强，对培养学生的创新能力有一定的作用。

This sketch has Azazel reclining a la oneof Ingres' female nudes, though I have no idea what her tongue isdoing.

这个素描已阿撒泻勒躺椅零点之一的Ingres'女裸女，虽然我不知道发生了什么，她的母语也这样做。

The generalized Jordan derivable mappings at zero point on von Neumann algebra are the sum of an inner derivation and identical mapping produced at a fixed operator,and the similar result is obtained on B.

受此启发，在本文中引入了零点广义Jordan可导映射的概念，并在此基础上对von Neumann代数上的

The signal amplifier should have features like low noise signal, zero drift, high precision, wide frequency band, high input resistance, and low output resistance.

信号放大器应该有特点，例如低噪声信号，零点漂移小，精度高，宽的频带，高输入电阻，低输出电阻。

This paper gives the time domain integral constraints of the feedback control systems tracking error that arise from the presence of stable zeros on or near the jω-axis, which shows that for a linear time invariant system, in order to guarantee the stability of the closed-loop system, the time domain integral constraints must be satisfied by the tracking error.

本文给出了反馈控制系统接近虚轴或虚轴上的稳定零点对跟踪误差的时间域积分约束。这一时间域积分约束是任何一个线性时不变系统为保证其闭环系统的稳定性，其跟踪误差必须满足的。

Irreducible character; zero point of character; character table

不可约特征标；特征标零点；特征标表

The thesis will introduce, respectively, relevant concepts of residue theorem and its promotion and application in two parts In the basic concepts of chapter II, the definition, classification and relationship between function zero and pole of the isolated singular point are given to lead out relevant definition, theorem and solving method, while the core content of this paper is promotion and application of residue theorem, including calculation of integration by using residues, application in diagonal theorem and argument theorem, application in electromagnetism and theorem promotion and relevant application of extension theorems

本文将从两大部分分别引入和浅析了留数定理的相关概念及其推广和应用在第二章的基本概念部分中，给出了孤立奇点的定义和分类、函数零点与极点的关系，从而引出留数定理的相关定义与定理及其求法而本文的核心内容也就是留数定理的推广和应用，包括运用留数来计算积分、体现在对角定理与辐角定理中的应用、在电磁学中的应用及其定理的推广和推广定理的相关应用

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。