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Improvement of MT migration tomography technology Based on the immanent relationship between tomography purpose and suitable frequency segment selection, we raise an entire frequency segment multi-parameter tomography scheme of MT finite difference migration. We establish a mathematical relationship among apparent electromagnetism reflectance, migration reflectance, background resistivity and the true resistivity distribution. After the introduction of TE/TM mode superpose rate, we carry out the associated resistivity tomography of two polarization mode to adapt the practical data interpolating situation.

大地电磁偏移成像的改进：针对频段选择和成像效果的内在关系，提出全频段、多参数有限差分偏移的解决方案；构建视反射系数、偏移反射系数、背景电阻率与实际电阻率分布的数学关系实现偏移电阻率成像；同时引入TE、TM模式加权因子以实现两个模式的联合偏移电阻率成像，更好的适应解释工作需要。

With the development of computer technology, mathematical simulation is an important way in studying the interior ballistics of guns now.

随着计算机技术的发展，数学仿真已成为研究火炮内弹道的重要手段。

The Barbour＇s mathematical model can be used to roughly predict and evaluate the effects of schistosomiasis control measures.

借助Barbour 血吸虫病传播数学模型能够粗略地评价和比较控制措施的效应。

As described in this paper, basing on the stress concentration factor and the equations given by Craeger and Barnby, a mathematical expression Ni=B(1/2π/2⊿σ_~m is derived for calculating the initiation life of fatigue cracks for the externally short notches on the fitted axles caused by the application of bending stresses.

本文根据Craeger公式、Barnby公式及缺口应力集中系数，导出了浅缺口在弯曲应力作用下的疲劳裂纹萌生寿命的表达式：。

This thesis has established the mathematical model of n-phase PMSM after thorough analysis of PMSM structure and running mode, and then put forward the vector transform method, which is as the base of vector control.

建立完善的多相化永磁同步电动机及控制系统的数学模型和分析方法是系统研究和实现的重要技术保证。

Magnitude is the basic representation during basic mathematical processes, with a consistence across notation and tasks.

数量表征是基础数学认知加工的基本心理表征，具有跨符号与跨任务的稳定性。

Chapter 2 contains the prerequisite mathematical knowledge, which comprises some essence conception of coding theory, some basic knowledge of code over ring and algebraic geometric code.

第二章，介绍编码理论的一些基本概念，以及环上编码理论研究发展的过程和代数几何码的一些基本知识。

We also illuminated the principle of each method, and listed corresponding mathematical model as well as basic solution process.

详细分析了三类方法的基本思想，根据其基本思想给出了相应的数学模型及数学模型的基本求解步骤。

Basing on the mathematical model, the configuration of control system has been founded.

基于数学模型，完成了控制系统组态。

The Bayes formula is used in judicature to calculate the probability of all the clauses which lead to the occurrence of one event , what is needed in judicature is the mathematical model to calculate the probability from the crime doubts when some cases occur, upon which the cases have been judged fairly and justly.

Bayes公式是当某个事件发生后用来计算引起该事件发生的所有原因的可能性大小的计算公式。在司法排案中需要的就是当某个案件发生后建立计算哪些嫌疑人作案的可能性大小的数学模型，以此排案量刑，做到公正公平。

I can still vividly recall the impressive scenes you gave. You were among my friends and relatives who accompanied me from my house to the seaport and when the porters were slow to show up, you obligingly carried my suitcase for me.

你对我的种种感人情意，使我记忆犹新，那天你随着我的亲友从家里送我上轮船，搬运工迟迟不来，你毅然替我提着皮箱上船。

St. Nicholas became the patron saint of Russia, where he was famous for his red cape, flowing white beard, and bishop's mitre.

圣尼古拉成了俄罗斯人的守护神，在那里，他以身披红斗篷，留着飘逸的白胡须，戴着主教法冠而闻名。