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1. The ratio printer is used to measure the proportions of different materials.
比例打印机用于测量不同材料的比值。
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2. The ratio printer was invented to help scientists analyze complex data more efficiently.
比例打印机的发明是为了帮助科学家更有效地分析复杂的数据。
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3. In this experiment, we will use the ratio printer to compare the results of two different samples.
在这个实验中，我们将使用比例打印机来比较两种不同样本的结果。