共有12394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? |
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![]() 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. |
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