In preface, Text includes four chapters content.
正文包括四章内容。
The preface includes the purpose, content and the main methods of the research.
序言部分对研究的缘起，研究的内容和主要方法作了介绍。
The preface part expounded several concepts of flowers and plants nursery stock industry, includes the purpose and significance of the studying, and the method and content of the studying.
前言部分，阐明了花卉苗木产业的几个概念、研究目的和意义、研究的方法与内容。
The preface part expounded several concepts of flowers and plants nursery stock industry, includes the purpose and significance of the studying, and the method and content of the studying.
前言部分，阐明了花卉苗木产业的几个概念、研究目的和意义、研究的方法与内容。
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