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part
s
per quadrillion
el.
千万亿分率
;
千万亿分之…
美、法计数制
parts per quadrillion
earth.sc.
千万亿分之
English thesaurus
parts per quadrillion
10-15
abbr.
ppq
(
MichaelBurov
)
Parts Per Quadrillion
abbr.
ppq
(
Ilves
)
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