2249| 6
|
[声学基础] 发声一定要有振动,那其他运动形式(如转动)是否可以产生声音 |
| ||
发表于 2010-4-3 21:05
|
显示全部楼层
| ||
| |
发表于 2010-4-6 17:38
|
显示全部楼层
| ||
GMT+8, 2024-11-28 10:10 , Processed in 0.057657 second(s), 17 queries , Gzip On.
Powered by Discuz! X3.4
Copyright © 2001-2021, Tencent Cloud.