control group 控制组
experimental group 实验组,试验组
简单的的实验通常包含一个实验组和一个控制组.
控制组对组内进行实验操作.
实验组不对组内进行实验操作.
两组内的成员随机分配.以达到对比效果,这样得出实验操作与实验结果相关的结论.
control group and experimental group
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请解释controlled group 和 experimental group
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