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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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.

youdao