共有11455人关注过本帖树形打印复制链接主题:系列问题之九:何为吸声材料?可分为几类?何为吸声系数?垂直入射和无规入射吸声系数之间有什么关系? |
---|
![]() 三人行 |
小大 1楼 | 信息 | 搜索 | 邮箱 | 主页 | UC | |
![]() ![]() ![]() ![]() 等级:新手上路 帖子:283 积分:3008 威望:0 精华:0 注册:2007-3-28 12:13:23 |
![]()
|
|
![]() Among any three people walking, I will find something to learn for sure. Their good qualities are to be followed, and their shortcomings are to be avoided. |
||
![]() |