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   English ⇄
Google | Forvo | +
parts per million by volume
gen. 百万分率体积= 0.0001 体积 ％
earth.sc. 百万分体积比
 English thesaurus
parts per million by volume
abbr. ppbv (MichaelBurov)
abbr., O&G, casp. ppmv (raf)
tech. ppmv (MichaelBurov)

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