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to phrases
Parts Per Trillion
abbr.
PPT
Part Per Trillion
immunol., abbr.
PPT
parts per trillion
10–12
abbr., tech.
ppt
(
MichaelBurov
)
parts per trillion
1012
tech.
ppt
(
MichaelBurov
)
Parts:
8 phrases
in 4 subjects
Abbreviation
4
Information technology
1
Military
2
Telecommunications
1
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