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	aerial change-over switch aerial chart aerial choke aerial cinematography aerial circuit aerial circuit breaker aerial coil aerial color film aerial colour photography aerial combat aerial combat maneuver aerial combat tactics aerial communication wire aerial condenser aerial conduction aerial conductor aerial construction aerial contact line aerial contaminant aerial contamination aerial convevor aerial conveyer aerial conveyor aerial cooling-air machine aerial coupling

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。