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XML是一种新的技术，XML的出现使得数据的传输变得很灵活，这本书对初学者很有用的!-XML is a new technology, the emergence of XML allows data transmission become very flexible, this book very useful for beginners!

turbo 码的c语言程序，这是网上下载的代码，可以-turbo code c language program, which is downloading the code, you can

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matlab7.0应用编程，中文资料，每章一个文件-Application Programming matlab7.0, English information, each devoted to a file

两个linux的电子书籍-two electronic books

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开源邮件服务器postfix的使用说明，与sendmail相比，安全，稳定，易于配置-revenue postfix mail server usage, compared with sendmail, security, stability, easy configuration

zemax源码： This DLL models a standard ZEMAX surface type, either plane, sphere, or conic The surface also demonstrates a user-defined apodization filter The filter is defined as part of the real ray trace, case 5 The filter can be used at the stop to produce x-y Gaussian apodization similar to the Gaussian pupil apodization in ZEMAX but separate in x and y. The amplitude apodization is of the form EXP[-(Gx(x/R)^2 + Gy(y/R)^2)] The transmission is of the form EXP[-2(Gx(x/R)^2 + Gy(y/R)^2)] where x^2 + y^2 = r^2 R = semi-diameter The tranmitted intensity is maximum in the center. T is set to 0 if semi-diameter < 1e-10 to avoid division by zero. -ZEMAX source: This DLL models a standard ZEMAX surface type, either plane, sphere, or conic The surface also demonstrates a user-defined apodization filter The filter is defined as part of the real ray trace, case 5 The filter can be used at the stop to produce xy Gaussian apodization similar to the Gaussian pupi