The simulation of RF environment is an important part in radar electronic combat(EC) simulation system, while simulation of RF environment effects is one of its important components.
射频环境仿真是雷达电子战仿真系统的重要组成部分，而射频环境效应仿真是射频环境仿真的主要内容之一。
It is shown GWT is one of the best tools for developing a rich client EC system.
实践表明，GWT是目前用来实现富客户端电子商务应用系统最有效的工具之一。
With the development of EC (Electronic Commerce ), the SA (Safe Authority)System is under construction. As one of the main SA Systems, SSL is adopted by many systems.
随着电子商务的蓬勃发展，网络的安全认证体系也在逐渐的建立和完善，SSL成为一种主流安全认证手段，已经被众多大型企业所采用。
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