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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。

The first chapter discussed the background and significance of the task from the practical and theoretical viewpoints.

本文首先论述了课题研究的背景和意义，然后对等离子体脱硫理论和应用的研究和发展动态进行综述。

The paper are consisted of four chapters as follows: In the first chapter, the background and significance of the task from the practical and theoretical viewpoints were discussed. Through comparing and referring the related works.

本文的工作主要按照以下四个章节来展开：第一章从理论和实际应用的角度论述了课题研究的背景和意义，对等离子体脱硝理论和应用的研究和发展动态进行了系统地综述，在比较和借鉴相关领域的研究工作的基础上，提出了本文的研究内容。

Practical , Strong and Durable , with Specially Designed Backrest and Delicate Style , Offer You Free Choice

经济实用，坚固耐用，再加上独到的*背设计，轻巧的造型，为使用者提供称心如意的选择

According to practical experience and study for many years, hot condensation liquid of backset current invite within 2.5-3 hours drawing former solvent of pot all change once, can keep a higher density to the draw pot crude drugs in unit time.

回流的热冷凝液约在2.5-3小时内将提取罐原溶剂全部更换一次，使提取罐内中药材组成中溶质浸出液中的溶质在单位时间能保持一个较高的浓度差，既继承了传统提取罐二次提法的工艺，又节省了50％溶剂投放量。

Achieving a safe, convenient, automatic, economic system of backup and recovery demonstrates very practical value.

实现一套安全的，方便的，自动的，经济的备份恢复系统非常有实际价值。

ObjectiveTo study bacteriostasis and its practical safe of Mango seed extract in vitro.

目的研究芒果提取物的体外抑菌效果及其使用的安全性。

Modern enterprises management knowledge, especially supply chain management theory is quoted in the thesis together with abundant of data and information as strong support. After thorough study and analysis of MAX BAHR, hopes this thesis can contribute practical appliances to the build-up of sourcing center for other multi-national companies.

此外，通过对一家经营范围局限在德国国内的建材连锁超市如何应对残酷的市场竞争，以及如何来调整自己的采购策略最主要是如何来调整公司在中国的采购策略的探讨，希望能为其他跨国公司如何在中国建立采购中心提供一些借鉴思路。

Now I have a bailiff, a townsman ; he seems a practical fellow

我现在用的总管是个城里人，看起来倒是个很能干的小伙子。

By synthesizing the axial force calculation, the design calculation method of balancing axial force has very good practical value.

综合受力计算，轴向力平衡的设计计算方法具有很好的实用价值。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。