present research situation and prospect 研究现状与前景
present situation and countermeasure research 现状与对策研究
present research situation and trend 研究现状和趋势
present research situation and question 研究现状和存在的问题
Including choose topic reason, significance, research present situation and research methods.
包括选题缘由、意义、研究现状和研究方法。
The first section: Preface. This section expounds briefly the present situation and research significance of this research topic.
全文共分四部分：第一部分：引言该部分简单介绍课题研究的现状及意义。
The primary supporting techniques, present research and application situation and developing tendency of precision farming are briefly introduced in the paper.
本文简要介绍了支持精准农业系统的主要关键技术、研究应用现状和发展趋势。
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