theoretical invention

The establishment and development of the multi-antenna information theory have revealed that the MIMO ( Multi-Input Multi-Output) technique can provide extraordinarily high spectral efficiency gain over the traditional single antenna systems, which have also laid the theoretical foundation for the invention and applications of space-time codes.

多天线信息理论揭示了多输入一多输出（MIMO：Multi-input multi-Output）技术所具有的远远超越于传统单天线系统的高效传输性能，为空时编码技术的产生与应用奠定了坚实的理论基础。

Ilizarov's whole life 、 theoretical discovery 、 appliance invention 、 technical innovation and spreading in the world were introduced. Hopefully it can give some inspirations to the work and innovation of clinical physicians.

对俄罗斯骨科医生Ilizarov的生平、理论发现、器械发明、技术创新与该技术在世界的传播过程进行了介绍，期望能对临床医生的工作与创新有所启示。

The theoretical invention is the expansion of city, urban network theory and the founding of urban ecological theory.

理论的创新之点主要在于城市中心理论的拓展，城市网络理论和城市生态理论的构建。