🌐فارسیEnglishEspañolفارسی한국어中文EntityQ3243772· pop 7· linked from 206 articlesمتغیر کنترلAlso known as experimental constant, constant, experiment constantexperimental element which is constant and unchangedAvailable in 7 languages中文Catalansimplezh_yueفارسی한국어via Wikidata sitelinks · CC0ConnectionskelvinEntityvolumeEntityCategoriesScience experimentsVariables (mathematics)