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01.声音的产生与传播【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 256.62 MB | |
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02.声音的特征【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 310.47 MB | |
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03.噪声的危害和控制【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 319.44 MB | |
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04.声音的利用【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 331.8 MB | |
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05.温度计的使用【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 363.63 MB | |
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06.汽化和液化(1)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 414.19 MB | |
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07.汽化和液化(2)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 316.6 MB | |
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08.熔化和凝固【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 417.21 MB | |
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09.升华和凝华【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 305.89 MB | |
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10.光的色散【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 423.77 MB | |
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11.看不见的光【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 349.58 MB | |
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12.光的直线传播的现象与应用【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 385.29 MB | |
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13.平面镜成像【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 412.45 MB | |
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14.光的反射【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 373.55 MB | |
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15.光的折射【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 502.82 MB | |
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16.透镜【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 377.06 MB | |
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17.凸透镜的成像规律【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 357.02 MB | |
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18.眼睛和眼镜【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 356.53 MB | |
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19.显微镜和望远镜【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 317.39 MB | |
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20.长度、时间及其测量(1)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 430.27 MB | |
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21.长度、时间及其测量(2)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 223.42 MB | |
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22.运动的快慢【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 378.26 MB | |
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23.运动的描述【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 317.89 MB | |
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24.质量(1)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 458.16 MB | |
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25.质量(2)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 266.48 MB | |
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26.密度(1)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 276.22 MB | |
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27.密度(2)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 478.49 MB | |
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28.测量物质的密度(1).mp4 | 2022-08-28 20:35:38 | 444.57 MB | |
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29.测量物质的密度(2)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 345.68 MB | |
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30.密度与社会生活【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 337.24 MB | |
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31.物质的物理属性【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 171.87 MB | |
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32.从粒子到宇宙【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 147.92 MB | |
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33.静电现象【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 167.38 MB | |
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34.探索更小的微粒【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 178.05 MB | |
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35.力(1).mp4 | 2022-08-28 20:35:38 | 349.58 MB | |
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36.力(2)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 349.58 MB | |
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37.弹力 弹簧测力计【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 340.24 MB | |
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38.重力【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 341.66 MB | |
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39.摩擦力(1).mp4 | 2022-08-28 20:35:38 | 398.88 MB | |
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40.摩擦力(2)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 371.16 MB | |
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41.力 力的作用是相互的【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 119.73 MB | |
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42.二力平衡【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 335.45 MB | |
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43.牛顿第一定律(1)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 307.42 MB | |
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44.牛顿第一定律(2)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 380.04 MB | |
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45.压强(1)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 340.29 MB | |
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46.压强(2)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 286.21 MB | |
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47.液体的压强(1)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 345.92 MB | |
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48.液体的压强(2)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 378.43 MB | |
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49.大气压强(1)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 391.26 MB | |
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50.大气压强(2)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 398.93 MB | |
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51.浮力(1)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 381.9 MB | |
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52.浮力(2)【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 389.28 MB | |
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53.浮力(3)【~VX:582229】.mp4 | 2022-08-28 20:35:38 | 355.33 MB | |
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54.浮力的应用【 ~VX:582229】.mp4 | 2022-08-28 20:35:38 | 366.48 MB |