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123.13.1元素周期表（1）.mp4 | 2024-02-29 14:26:46 | 38.95 MB | |
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124.13.1元素周期表（2）.mp4 | 2024-02-29 14:26:46 | 40.16 MB | |
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125.13.1元素周期表（3）.mp4 | 2024-02-29 14:26:46 | 38.49 MB | |
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126.13.2元素周期律（1）.mp4 | 2024-02-29 14:26:46 | 77.96 MB | |
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127.13.2元素周期律（2）.mp4 | 2024-02-29 14:26:46 | 58.52 MB | |
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128.元素周期律（3）.mp4 | 2024-02-29 14:26:46 | 58.09 MB | |
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129.13.3 6+1条线.mp4 | 2024-02-29 14:26:46 | 19.47 MB | |
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130.13.5氢键.mp4 | 2024-02-29 14:26:46 | 60.55 MB | |
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131.13.4化学键（10.mp4 | 2024-02-29 14:26:46 | 113.61 MB | |
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132.13.4化学键（2）.mp4 | 2024-02-29 14:26:46 | 60.55 MB | |
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133.13.3 6+1条线练习.mp4 | 2024-02-29 14:26:46 | 41.55 MB |