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传统声音传播演示器实验效果非常不明显,都是抽真空和密封出现问题。于是,我对这套实验装置反复研究,做了脱胎换骨地改进,实验效果明显提高。
The results of traditional sound propagation demonstrators are very inconspicuous, and they are all problems of vacuum and sealing. Therefore, I repeatedly studied this set of experimental devices and made improvements. The experimental results were significantly improved.