英语词汇“ppb”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ppb
释义	ppb in American English parts per billion Examples of 'ppb' in a sentence ppb Concentrations of methane have risen from 700 parts per billion (ppb) to 1,745 ppb. Times, Sunday Times (2009) Laboratory analysis is done on samples that are 100 ppb and below using atomic absorption spectrophotometry. The Scientist (2000)
随便看	decilitre decillion decillionth decimal decimal classification decimal currency decimal fraction decimalisation decimalise decimalism decimalist decimalization decimalize decimally decimal place decimal point decimal-point decimal system decimate decimation decimator decime decimeter decimetre decimetric

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ppb in American English