| 文件 | 时间 | 大小 | 下载 | |
|---|---|---|---|---|
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01-声音的产生.mp4 | 2024-05-13 03:49:54 | 106.69 MB | |
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02-声音的传播.mp4 | 2024-05-13 03:49:54 | 27.92 MB | |
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03-传声介质.mp4 | 2024-05-13 03:49:54 | 93.32 MB | |
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04-声速.mp4 | 2024-05-13 03:49:54 | 37 MB | |
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05-声音的特性.mp4 | 2024-05-13 03:49:54 | 65.31 MB | |
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06-响度和振幅.mp4 | 2024-05-13 03:49:54 | 69.16 MB | |
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07-音调的决定因素.mp4 | 2024-05-13 03:49:54 | 52.05 MB | |
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08-音调和频率.mp4 | 2024-05-13 03:49:54 | 62.94 MB | |
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09-水瓶琴（实验）.mp4 | 2024-05-13 03:49:54 | 66.37 MB | |
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10-音色的决定因素.mp4 | 2024-05-13 03:49:54 | 31.59 MB | |
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11-听觉的频率范围.mp4 | 2024-05-13 03:49:54 | 90.68 MB | |
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12-超声波和次声波.mp4 | 2024-05-13 03:49:54 | 49.74 MB | |
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回声测距.mp4 | 2024-05-13 03:49:54 | 66.61 MB |