已知空气密度为P,怎样用天平和水测量出小墨水瓶子里的空气质量,写出实验过程,
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![已知空气密度为P,怎样用天平和水测量出小墨水瓶子里的空气质量,写出实验过程,](/uploads/image/z/1385372-20-2.jpg?t=%E5%B7%B2%E7%9F%A5%E7%A9%BA%E6%B0%94%E5%AF%86%E5%BA%A6%E4%B8%BAP%2C%E6%80%8E%E6%A0%B7%E7%94%A8%E5%A4%A9%E5%B9%B3%E5%92%8C%E6%B0%B4%E6%B5%8B%E9%87%8F%E5%87%BA%E5%B0%8F%E5%A2%A8%E6%B0%B4%E7%93%B6%E5%AD%90%E9%87%8C%E7%9A%84%E7%A9%BA%E6%B0%94%E8%B4%A8%E9%87%8F%2C%E5%86%99%E5%87%BA%E5%AE%9E%E9%AA%8C%E8%BF%87%E7%A8%8B%2C)
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