| 文件 | 时间 | 大小 | 下载 | |
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01.运动的描述...mp4 | 2024-07-01 17:57:55 | 317.89 MB | |
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02.运动的快慢...mp4 | 2024-07-01 17:57:55 | 378.26 MB | |
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03.长度、时间及其测量（1）...mp4 | 2024-07-01 17:57:55 | 430.27 MB | |
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04.长度、时间及其测量（2）...mp4 | 2024-07-01 17:57:55 | 223.42 MB | |
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05.声音的产生与传播...mp4 | 2024-07-01 17:57:55 | 256.62 MB | |
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06.声音的特征...mp4 | 2024-07-01 17:57:55 | 310.47 MB | |
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07.噪声的危害和控制...mp4 | 2024-07-01 17:57:55 | 319.44 MB | |
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08.质量（1）...mp4 | 2024-07-01 17:57:55 | 458.16 MB | |
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09.质量（2）...mp4 | 2024-07-01 17:57:55 | 266.48 MB | |
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10.密度（1）...mp4 | 2024-07-01 17:57:55 | 276.22 MB | |
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11.密度（2）...mp4 | 2024-07-01 17:57:55 | 478.49 MB | |
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12.测量物质的密度（1）...mp4 | 2024-07-01 17:57:55 | 444.57 MB | |
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13.测量物质的密度（2）...mp4 | 2024-07-01 17:57:55 | 345.68 MB | |
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14.密度与社会生活...mp4 | 2024-07-01 17:57:55 | 337.24 MB | |
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15.力（1）...mp4 | 2024-07-01 17:57:55 | 349.58 MB | |
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16.力（2）...mp4 | 2024-07-01 17:57:55 | 336.78 MB | |
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17.弹力弹簧测力计...mp4 | 2024-07-01 17:57:55 | 340.24 MB | |
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18.重力...mp4 | 2024-07-01 17:57:55 | 341.66 MB | |
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19.二力平衡...mp4 | 2024-07-01 17:57:55 | 335.45 MB | |
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20.摩擦力（1）...mp4 | 2024-07-01 17:57:55 | 398.88 MB | |
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21.摩擦力（2）...mp4 | 2024-07-01 17:57:55 | 371.16 MB | |
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22.牛顿第一定律（1）...mp4 | 2024-07-01 17:57:55 | 307.42 MB | |
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23.牛顿第一定律（2）...mp4 | 2024-07-01 17:57:55 | 380.04 MB | |
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24.压强（1）...mp4 | 2024-07-01 17:57:55 | 340.29 MB | |
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25.压强（2）...mp4 | 2024-07-01 17:57:55 | 286.21 MB | |
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26.液体的压强（1）...mp4 | 2024-07-01 17:57:55 | 345.92 MB | |
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27.液体的压强（2）...mp4 | 2024-07-01 17:57:55 | 378.43 MB | |
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28.大气压强（1）...mp4 | 2024-07-01 17:57:55 | 391.26 MB | |
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29.大气压强（2）...mp4 | 2024-07-01 17:57:55 | 398.93 MB | |
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30.流体压强与流速的关系...mp4 | 2024-07-01 17:57:55 | 376.59 MB | |
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31.浮力（1）...mp4 | 2024-07-01 17:57:55 | 381.9 MB | |
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32.浮力（2）...mp4 | 2024-07-01 17:57:55 | 389.28 MB | |
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33.浮力（3）...mp4 | 2024-07-01 17:57:55 | 355.33 MB | |
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34.浮力的应用...mp4 | 2024-07-01 17:57:55 | 366.48 MB |