数据库结构介绍：工作底稿库和合并报表库文件的结构。

The database construction primarily introduced: work sheet database and Amalgamation Accounting Statement database.

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本文综述了天蚕素抗菌肽的结构、来源、生物作用，重点介绍了天蚕素抗菌肽的应用，并对其存在的问题和未来发展前景进行分析。

This paper reviews the structure, source, biological function of cecropins and their application in plants and animals, and discuses their existing problems and perspectives.

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介绍了 DFZL 型颗粒破碎机的结构、性能及组合方式。

The configuration, performance and combination mode of DFZL pellet crumbler are introduced.

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So, to do this, what I'm going to do is introduce the topic of Lewis structures.

那么，了做到这一点，我将开始介绍,路易斯结构。

麻省理工公开课 - 化学原理课程节选

In Week 2 we'll look at things like cryptography and functions and the tools that by which you begin to assemble solutions to problems; in Week 3 we'll introduce what are generally ; known as algorithms and data structures; mechanisms by which you can solve problems more efficiently, effectively.

第2周,我们学习加密技术及其功能,还会学到一些操作工具,通过这些工具的使用来收集解决问题的办法,第3周,我们将介绍;,算法和数据结构,以及可以更有效地解决问题的机制。

哈佛公开课 - 计算机科学课程节选