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单词 control group
释义

Definition of control group in English:

control group

noun

  • A group acting as a control in an experiment; especially 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.

Origin

Late 19th century; earliest use found in Medical News.

 
 

Definition of control group in US English:

control group

noun

  • A group acting as a control in an experiment; especially 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.

Origin

Late 19th century; earliest use found in Medical News.

 
 
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更新时间：2024/12/23 6:15:29