| 单词 | control group |
| 释义 | > as lemmascontrol group control group n. a group acting as a control in an experiment; esp. a group of people participating in a study or trial who, typically without their knowledge, serve as a control by not being given the treatment being tested; cf. matched control n. at matched adj. Compounds. ΚΠ 1896 Med. News 9 May 539/2 The experiments were also made upon control groups of non-alcoholized rabbits simultaneously. 1952 W. J. H. Sprott Social Psychol. 120 Usually the conduct of the experimental group is compared with a ‘control’ group which has not been through the experimental mill. 2010 New Yorker 1 Mar. 70/2 Drug trials normally test medications against placebos—sugar pills—which are given to a control group. < as lemmas |
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