反向

To Popper,the relationship mainly is that: Moral is the most important thing in the whole human world,science should be based on ethics;Moral and science in nature are radically different;reasonable science activity and reasonable moral practice share common fact foundation, common reverse thinking mode,and common realist and negativist manner.

在他那里，两者关系主要为：其一，道德在全部人的世界中处于最重要的地位，科学应该以伦理学为基础；其二，道德与科学性质是根本不同的；其三，合理科学活动与合理道德实践分享共同的客观事实基础，共同的反向思维方式以及由此形成的现实主义、消极主义态度。

It tires not nor does it boast of its power; but belongs the air, travelling it may be six thousand miles to and from its northern nesting home feeding its flown young as it flies and slipping through a medium that seems to help its passage even when the wind is adverse.

它即不疲倦也不炫耀它的力量，而是随着风飘，喂养飞行的幼鸟，檐子可能会离北方的巢穴六千英里远，而当风反向时，会滑行以帮助它自己通过。

According to Newton's third law of motion—for every action there is an equal and opposite reaction—air streaming out the back faster than the aircraft's speed will thrust the plane forward.

依据牛顿第三运动定律，每个作用力必会产生一个等量而反向的作用力，因此当空气以高于飞机的速度自引擎尾部流出时，便可将飞机向前推。

Troubleshooting problems caused by faulty or non-existant reverse DNS can take considerable time and effort.

疑难解答问题所造成的故障或不existant反向域名解析，可需要一段相当长的时间和精力。

An improved artificial neural network model of lowpass filter with combinatorial nonperiodic defected ground structures is developed in this paper.

采用一种改进的人工神经网络反向传播算法，将动量方法和可变学习速度的BP算法结合，并且在每个样本点更新权值和偏置值，这种算法称为动量VLBP算法。

Artificial neural network ; Backpropagation algorithm ; Combinatorial nonperiodic defected ground structures ; Momentum variable learning rate backpropagation

神经网络；反向传播算法；组合式非周期性缺陷接地结构；动量VLBP

This thesis is divided into six parts. The first chapter is preface, the current status of research in the inverse problems for parabolic partial differential equations is reported; the second chapter is "regularization methods for numerical differentiation and their applications ", in this chapter we investigate many regularization methods from a viewpoint of regularization theory and algorithm, some applications in the inverse problems for parabolic partial differential equations are given; the third chapter is "spectral regularization methods". Based on Fourier analysis, within the framework of regularization theory, we apply the spectral methods to some ill-posed problems. Many numerical experiments are done in order to show the validity of the methods; the fourth chapter is devoted to wavelet dual least squares method and a revised wavelet method; in the fifth chapter,we combine finite difference method with method of lines and apply it to the backward heat conduction problem in time; in the sixth chapter "identification problems for unknown source ", the essence and the degree of two problems related to source identification are pointed out, at the same time, some numerical methods are reported.

本文分为六个部分，第一章前言简要分析了国内外抛物型偏微分方程反问题的研究现状；第二章数值微分的正则化及其应用从正则化理论和算法的角度出发，考察了许多正则化方法，还给出了数值微分在抛物型偏微分方程反问题的一些应用；第三章谱正则化方法是在Fourier分析的基础上，在一般正则化理论的框架下，给出了这种方法在各种不适定问题中的应用，数值实验表明谱方法是有效的；第四章研究了小波对偶最小二乘方法和改进的小波方法；第五章主要研究了有限差分方法结合线方法在时间反向热传导问题中的应用；第六章是未知源识别问题，主要指出了两类未知源问题的不适定程度和不适定本质，同时报告了一些数值方法。

It indicates that under the design water head condition, the ogee gates work safely in operation, miter gates can open and shut steadily.

监测成果表明押在设计水头运行条件下，反向弧形阀门在启闭过程中运行是安全的，人字门在启闭过程中运行平稳。

The API works just as a reverse one-to-many relationship (described in the previous section).

API的工作方式跟前一节所描述的反向一对多关系差不多。

The inverse dynamics of the rigid multibody system is studied based on the spatial operator algebra theory, and the generalized mass procedure is realized in the environment of Mathematica 5.2 software.

应用空间算子代数理论，在通用计算机符号演算软件Mathematica5.2的环境下，对多刚体系统反向动力学进行设计与实现。

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。