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为什么实验中对照组用CK表示？ - 知乎 CK是什么的缩写？CK是英文单词"check"的缩写，check有「检查」「核对」的意义，在这里指的是进行平均值分析的时候，作为对照进行比较、核对的意义。科学实验中存在用CG (control group) 的缩写或control一词来表示对照组的情况。 check: to make certain that something or someone is correct, safe correct, safe, or suitable by