English, as a most popular language, its communicational function is more and more important.
英语作为世界最通用的语言，其交际功能愈显重要。
SPW is an advanced tool for modeling and simulating communication systems, it has abundant communicational simulating blocks and very flexible function for building user custom blocks.
SPW是一个先进的通信系统建模、仿真工具，它具有丰富的通信仿真模块和非常灵活的创建自定义模块功能。
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