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初二-物理（北京版）光的传播
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初二-物理(人教版)大气压强
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初二-物理（师大版）眼睛与眼镜
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初二-物理（人教版）重力
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初二-物理(北京版)熔化和凝固
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初二-物理(人教版)压强
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初二-物理(师大版)功
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初二-物理(人教版)滑轮
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初二-物理(师大版)杠杆
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初二-物理(北京版)物体的颜色
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初二-物理(北京版)杠杆
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初二-物理(北京版)势能
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初二-物理(师大版)滑轮
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