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科教玩具学生儿童物理实验简易天平儿童学生用天平
air power experiment kit(空气力量实验套装)
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¥21.0 | 999999 set available |
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mathematical balance(数学天平)
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¥22.0 | 10079 set available |
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pendulum and energy(钟摆与能量)
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¥26.0 | 10099 set available |
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the secret of roller coaster(过山车的秘密)
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¥28.0 | 10099 set available |
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rockets that can fly over a long distance(能飞超远距离的火箭)
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¥33.0 | 10099 set available |
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