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parts per trillion 10**12
chem. Pikogramm pro Gramm; Nanogramm pro Kilogramm
part per trillion
chem. Nanogramm pro Kilogramm; Pikogramm pro Gramm
 English thesaurus
parts per trillion 10–12
abbr., tech. ppt (MichaelBurov)
parts per trillion 10–12
tech. ppt (MichaelBurov)
Parts Per Trillion
abbr. PPT
Part Per Trillion
immunol., abbr. PPT