“experimental before-after design”的概念、定义、翻译、参考文献-科学参考

单词	experimental before-after design
释义	experimental before-after design Encyclopedia 理学实验设计释 experimental before-after design实验前后设计对被试进行实验处理，并将处理前与处理后的观测结果进行对比，以得到实验处理效用的实验设计。
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