دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an earthy deposit made up of the siliceous cell walls of onecelled marine algae called diatoms. It is used as an admixture for cement to produce a lowdensity slurry.

silica particles from Diatom beds. Used as a filtering media and as an additive to cement.