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.

根据吸声论基础以及多孔吸声材料吸声机,合非织造布特点,系统分析了非织造布吸声原。

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.

本文以移动短和固定短为基础,着重讨论移动短和固定短互联解决方案。