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初二-物理（人教版）弹力
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初二-物理(人教版)杠杆
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初二-物理（北京版）光的反射
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初二-物理(北京版)机械能
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初二-物理(师大版)功率
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初二-物理(人教版)机械效率
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初二-物理(师大版)牛顿第一定律
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初二-物理(北京版)汽化和液化
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初二-物理(师大版)大气压强
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初二-物理(人教版)功
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初二-物理(北京版)机械效率
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初二-物理(北京版)比热容
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初二-物理(师大版)连通器
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初二-物理(师大版)二力平衡
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初二-物理(人教版)液体的压强
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