In this thesis through the project development process, research and design of radio-CD players and recorders voice player of the circuit, and Second Road signal synthesis.
在本毕业论文通过这个项目的开发过程，研究并设计广播录放盘CD机和语音播放部分电路，实现二路信号的合成。
The book CD is book accessory, which explain the book contents with diagram, voice and image.
随书光盘是图书的附件，对图书内容进行图文声像的说明、解释和演绎。
The book CD is book accessory, which explain the book contents with diagram, voice and image.
随书光盘是图书的附件，对图书内容进行图文声像的说明、解释和演绎。
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