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大型电脑配件商城的代码，以前给一家大型销售公司开发的，花了很多钱和精力，功能复杂，当然软件也很大。-Large computer accessories store code, before selling the company to a large-scale development, spent a lot of money and effort, functional complexity, of course, the software is also great.

There are detailed notes, Energy spectrum analysis and calculation, Fiber Transmission wireless communication system performance.