英语词汇sub-ppb怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	sub-ppb
释义	sub-ppb 简明释义十亿分之一以下网络释义 1 ?低于10 低于10-9的
随便看	Planning,Disaster Planning,Discharge planning discipline plan drawing planning economics planning editor planning estimate planning exception planning execution time planning experiment planning factor planning factors planning failure planning,family planning for action planning for capital investment planning for computer planning for equipment investment planning for industrial district planning for information system planning for operations planning for residential area planning for the bazaar economy planning function planning gain

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。