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题目某课外兴趣小组,将塑料小桶分别装满已知密度的四种不同的液体后,用弹簧测力计称它们的重力,记录了下表中的数据.
The title of an after-school interest group filled plastic kegs with four different liquids of known densities and called them gravity on a spring dynamometer and recorded the data in the table below.