a vertical glass tube used in column chromatography; a mixture is poured in the top and washed through a stationary substance where components of the mixture are adsorbed selectively to form colored b
a vertical array of numbers or other information
هل يمكنك نطقها بطريقة أفضل؟ أو بلهجة مختلفة؟
انطق columns فى الإنجليزية