“parts per billion--parts per billion (ppb)”概念、定义、翻译-科学时代

单词	parts per billion--parts per billion (ppb)
释义	水利水电词汇手册 parts per billion (ppb) 十亿分率，十亿分之
随便看	dahlin dahllite dahllite Dahl's law dahn Dahomey dahoon Dahuria Gentian Root Dahurian Angelica Root Dahurian Lily Dahurian Patrinia Herb Dahurian Rhododendron Leaf Dahurian rose Daibosatsu daibutu daidai daidzein Dai-gak Guk-sa Daigo-tettei Daigu Ryōkan Dail Dail Eireann dailies dailies dailies advisor

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

parts per billion (ppb)