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做手机开发硬件的朋友注意了，该文章主要讲解了做手机射频方面的问题，从原理到PCB各方面的注意问题都有！-Make phone Friend attention to the development of hardware, and the main article on the phone to do radio frequency issues, from the principle to the attention of all aspects of PCB problems!

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Visual C++实践与提高－－数据库开发与工程应用篇 随书代码 希望对用ADO开发的人会有所帮助 这是第10、11章的-Visual C Practice and improve-- database development and application articles with the hope that the code book to use ADO development will be helpful This is the first 10 and 11 of Chapter

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这个是南开大学上机100题的题目和答案，对学习c语言的人有很大的帮助-Nankai University is the 100 on the plane and that the questions and answers, to learn the language c there is a great help

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