VRML对现实生活中的常用环境（多媒体教室）进行模拟，非常逼真形象，代码虽然很长，但是也比较容易理解。-VRML to the real lives of common environment (multimedia classrooms) simulation, a very lifelike image, Although the code is very long, but also easier to understand.

OFDM是一种新型的调制方式，称为正交频分复用。阐述了OFDM的原理、系统组成和 优良性质及其在数字电视传输和混合光纤电缆网(HF，C)中的应用。 -OFDM is a new type of modulation is called orthogonal frequency division multiplexing. OFDM on the principles of good composition and the nature of the system and its appl

自适应哈弗曼树算法的简单编码 使用vc++完成。输入字符串，动态输出编码-Adaptive Havermann a simple tree algorithm using vc++ code completion. Input strings, dynamic output coding