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	chania chank channel channel bar channel captain channel country channel crossing channeler channel ferry channel-hop channel-hopped channel-hopping channeling channel iron channelisation channelise channel islander channel islands channelization channelize channeller channel port channel-surf channel-surfing channel tunnel

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ppb in American English