第一部分介绍了论文选题的背景、目的和意义。
The first section introduces the background of this thesis , the object and the meaning.
引言部分介绍了论文选题的背景、意义及研究方法。
The introduction covers the background, the significance and research method of the dissertation.
绪论部分概述论文选题的背景、研究内容、研究方法及框架。
Introduction summarizes the background of thesis selection, contents and ways of research, and the framework.
首先，本文主要介绍论文选题的背景、研究意义、研究的主要内容和方法。
Firstly, it describes the research background, research purpose, research contents and research methods.
论文选题的背景和意义实施西部开发战略，是中国面向新世纪的重大抉择。
The background and significance of subject selection Strategy for the grand-scale development of China's western region is an important decision made by China's government in the turn of new century.
本文结构如下：第一部分导论主要介绍了论文选题的背景、研究意义、研究思路和研究方法。
This paper is structured as follows: the first section introduces the background of topics, research significance, research ideas and research methods.
主要介绍了论文选题的背景及依据、论文选题的研究现状以及与论文相关的几个主要概念的诠释。
The background, basis, research status of this topic and interpretations of the main concepts related to the thesis are introduced respectively.
第一章绪论部分主要介绍了论文选题的背景和意义，国内外研究现状，论文写作基本思路和研究方法。
The first chapter introduces some of the major topics of the background and significance, domestic and foreign outside research status of the literature review, essay writing basic ideas and methods.
本文首先阐述了论文选题的背景及其意义，介绍了病毒性网络营销的研究现状，给出了本文的研究内容和思路。
This thesis starts by explaining background and meaning of selected title. It introduces the status of viral network marketing, providing research contents herein and thinking.
第一部分论述了论文选题的背景、研究目的及意义、国内外研究现状、研究的主要内容、预期目标及本课题的前景。
The first part discusses the background of the topics, purpose and significance, status, the main content, the target and the subject of the future.
本文序论主要介绍与论文选题相关的研究背景、研究目的、研究假设、研究方法。
The preface mainly focuses on research background, research objectives, research hypotheses and research methods.
本文第一章介绍了逆向工程和CAD/CAM技术在口腔修复领域的应用与研究，以此为基础，提出了论文选题背景、研究意义和主要研究内容。
The first chapter introduces the RE technology and the CAD /CAM application in the field of dental cosmetology, then gives the background and significance of paper selection based on this situation.
论文第一部分为引言部分，介绍本论题的选题背景和依据、论文选题意义、论文选择的重点难点以及论文研究方法。
Thesis part I is a foreword part, introducing the background and significance, the thesis topic, the key, the difficulties and research methods.
论文第一部分为引言部分，介绍本论题的选题背景和依据、论文选题意义、论文选择的重点难点以及论文研究方法。
Thesis part I is a foreword part, introducing the background and significance, the thesis topic, the key, the difficulties and research methods.
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