“parts per billion (ppb)”的概念、定义、翻译、参考文献-科学参考

单词	parts per billion (ppb)
释义	parts per billion (ppb) 十亿分率
随便看	fluid temperature range fluid texture fluid-tight fluid-tight contact fluid-tight joint fluid tightness fluid toxoid (FT) fluid transmission fluid transmission gear fluid unit fluid valve fluid-valve fluid-velocity profile fluid viscosity fluid viscosity ratio fluid volume meter fluid wave fluid wax fluid wedge fluid welding fluid whirl fluke fluke disease fluke infection flukes

科学参考收录了1248194条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。