To determine whether a file or a group of text files has embedded control characters, use these options. For instance, if a file has trailing blanks, you can see them

若要确定某个文件或某一组文本文件是否有嵌入的控制字符，可以使用这些选项。

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The Main Research task of this text is for Environmental Monitoring of Intelligent Greenhouse and needs of Control system, Designing and implementing a dedicatedly embedded CPU.

本文主要的研究任务是：针对智能温室环境监测和控制系统的需要，设计并实现一款专用嵌入式CPU。

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