Using the method of compare experiment, the samples of liquid al alloy with and without treatment by electromagnetic pump were studied respectively.

通过对比实验的方法，研究了不经过和经过电磁泵处理的铝合金液浇注流动性试样。

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The optimizer will compare the cost of each method to determine the best one to use.

优化器将比较每种方法的成本，确定使用最好的一种。

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The researchers will compare the number of mosquitoes caught with each method.

研究人员比较每种方法捕获的蚊子数量。

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