The paper has four chapters:The first chapter summarizes the research achievements of the natural calamities of Eastern Han Dynasty.

正文共分四章：第一章回顧總結(jié)了東漢自然災(zāi)害的研究現(xiàn)狀91精品在线国产。

Based on the above research, the author summarizes some main indexes of network and eigenvalue analysis.

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First, the dissertation summarizes the properties, developing state and application fields of BLDCM, then its fundmental structure; operation principle and control strategy is also presented. On the base of roundly analyzing all kinds of the drive motor in electromotion type railway switch, BLDCM is proposed to replace the formerly traditional DC motor in railway switch. Second, the whole design scheme and key technology of control system is put forward based on analyse of the technical parameters and requirements.

首先308AV.COM，論文介紹了無刷直流電動機的特點、發(fā)展和應(yīng)用概況在线电影你懂的0，分析了稀土永磁無刷直流電機系統(tǒng)的基本構(gòu)成欧美瑟瑟网站、工作原理和控制方法；在對目前各種電動轉(zhuǎn)轍機驅(qū)動電機分析的基礎(chǔ)上japan黄片在线看，提出將稀土永磁無刷直流電機用于鐵路轉(zhuǎn)轍機洲黄色网站，以替換原有的串勵有刷直流電動機。

This paper summarizes teaching experiences about the fundamental technological curriculum on the basis of electrotechnics, and introduces several practicable methods, for example,by using contrast method, emphasizing the content contact of each part, giving some questions, undertaking summarization, etc.

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The paper emphatically summarizes the classification, thinking mode, present status, problems and devolopment of methods for solving nonlinear system of equations, and specially recommends some practical and new methods, such as the elimination by eliminant with aid of basic sets, homotopy method and decomposition method, etc.

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Based on the characteristics of biomass fuel, this article summarizes the sources of alkali metals in biomass and the elutriation and migration.

在明確了生物質(zhì)燃料特點的基礎(chǔ)上久久久免费播放视频，對生物質(zhì)中堿金屬元素的來源和析出遷移規(guī)律進行了概述。

This paper analyzes and summarizes the evolution, current status and implications of econometrics in China based on the key embranchment.

本文正是以計量經(jīng)濟學這個關(guān)鍵的分支學科的應(yīng)用為著眼點国语午夜成人三级片，分析和總結(jié)計量經(jīng)濟學在中國的發(fā)展史欧美妓女视频、現(xiàn)狀和啟示。

Theoretically, the present thesis is based upon the encouragement theory in the study of administration. The literature of the thesis is mainly devoted to the survey of research at home and abroad in two aspects: the young teacher development and encouragement mechanism. Methodologically, the thesis is a case study of Northwest Normal University. With the statistical analysis of the status quo of teaching and research, as well as the demand of research of the young teachers in the university, the thesis treats the current encouragement system, summarizes the conspicuous problems and then advances countermeasures in the research enragement system of young teachers in these universities based upon the qualitative and quantitative studies.

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The epilogue summarizes the innovation of this dissertation and points out the problems that should be further studied.

結(jié)語闡述了本研究的創(chuàng)新之處和有待進一步研究的課題黄色网站入口观看。

Epilogue summarizes the characteristics of the election in 1912, and further emphasizes the significance of this thesis.

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