比较原理

This paper investigates alternating iterative method and generalized alternating method for the solution of a large linear system, extend the convergence theorem and comparison theorem for generalized or alternating iterative method when the coefficient are Hermitian positive definite systems.

本文主要研究了大型线性方程组的交替迭代法及迭代法的各种变形，给出了当系数矩阵为Hermitian正定矩阵时各类迭代法的收敛原理及其相应的比较理论。

This article has first analyzed the GPS localization navigation principle, in view of its un- voluntary navigation flaw, the analysis has compared the performance of many kinds of assistant navigation system, determined use Dead Reckoning system, composed of electronic compass and milemeter, to complete the auxiliary localization function, when GPS abated. This scheme could get a satisfying short-time precision, and its cost was low.

本文首先分析了GPS定位导航原理，针对其非主动式导航的缺陷，在分析比较了多种辅助导航系统的性能后，采用"电子罗盘+里程计"的DR航迹推算系统来完成GPS失效时的辅助定位，该方案能保证短时精度，且成本低廉。

The main works are as follows:The dissertation gives a discussion and generalization all kinds of location methods fundamental principle then compares these methods performance, realizable complexity and applied circumstance.

本文在深入研究了无线蜂窝通信系统的定位技术基础上，阐述了作者在其中几个问题上所做的工作详细讨论和总结了各种定位方法的基本原理，并且对这些方法的性能、实现复杂度和适用环境进行讨论比较。

This article studies the new technology,the application domain of "the lovebird" from many aspects ,which analysis "the lovebird"'s system involves,also quite systematically introduced "love bird"'s system composition,the principle of work and the hardware manufacture process.Moreover ,according to some main questions which in the processmeets,this article have carryed the analysis.

本文从多个方面研究分析"爱情鸟"涉及的新技术、应用领域且比较系统地介绍"爱情鸟"的系统组成、工作原理及硬件制作过程并对制作过程中遇到的一些主要问题进行分析。

Lucubrate on the slit rolling theories, design and optimize the technique of new products are provided with the important practicality significance.

因此，对切分轧制的原理进一步研究，开发和优化新产品的切分轧制工艺具有比较重要的实际意义。

Integrate the load transfer principle and shearing displacement method to set up the load transfer equation between the pile of soil, using the discrete and fitting methods to solve the equation so as to educe the pile displacement of arbitrary section as well as the analytical solution. Comparing the results with the soil settlement solved by the Mair equation, the relative displacement can be gained.

1结合荷载传递原理和剪切位移法的思想建立隧道开挖作用下的桩土荷载传递方程，采用离散和拟合两种方法来对该一元二次非齐次微分方程进行求解，可分别得到桩身任意截面处的桩体位移以及桩身位移的解析解，并与基于Mair公式求得的地面下任意深度处的土体沉降进行比较，即可求出桩与桩侧土之间的相对位移。

So I went to work;and here I need observe.that as reason is the substance and original of the mathematics,so by stating and squaring every thing by reason, and by making the most rational judgment of things,every man may be in time master of every mechanic art.

于是，我开始工作。说到这里，我必须先说明一下，推理乃是数学之本质和原理。因此，如果我们能对一切事物都加以分析比较、精思明断，那么人人都可以掌握任何技艺。

Compared with the geometrical imaging method, the principle of the matrix transformation method is simpler, the meaning of the parameters is more intuitive, and the deriving process is more precise.

与几何成像法求传感器转换公式相比较，矩阵变换法的原理更简洁，参数意义更明显，推导过程更简单易懂。

Then summarize the theory, merit and demerit of the arithmetic of classic key-frame extraction.

然后比较系统地总结了经典关键帧提取的算法与原理及各自的优缺点。

Minimal energy principle and finite element method were employed in modeling the solder joint shapes of Plastic Ball Grid Array device.

以无引脚表面组装元器件二维焊点问题为例，用两种不同的建模方法对其建立数学模型并进行分析比较，指出用基于最小能量原理的有限元数值分析求解表面组装焊点形态问题的方法优于一般数学分析方法。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。