基础结构

According to acoustic structure theory base,acoustic principle of multi-holes acoustextile and nonwovens characteristics,nonwovens acoustic theory are analysed in the paper.

根据吸声结构理论基础及多孔吸声材料吸声机理,结合非织造布结构特点,系统分析了非织造布吸声原理。

This article introduces the short message network structure of mobile and fixed-line network, and then describes the solution to the interwork between these networks.

本文移动短信和固定短信网络结构为基础,着重讨论移动短信和固定短信网络互联解决方案。