“background activity level”概念、定义、翻译-科学时代

单词	background activity level
释义	能源科学技术词汇手册 background activity level 本底放射性，本底活度水平
随便看	missile strike warfare missile support missile system missile target missile team missile test range missile tracking missile tracking system missile training missile trajectory missile troops missile TT & missile unit missile vehicle missile warfare missile weapon missile zero-in missilize missing missing missing a bus missing at random missing at random--missing at random（MAR） missing at random（MAR） missing completely at random

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。