“four forms of activity”概念、定义、翻译-科学时代

单词	four forms of activity
释义	宗教词汇手册 four forms of activity 〈佛教〉四有为相
随便看	background counting rate background density background dose background dose background equivalent activity background equivalent activity background equivalent activity（BEA） backgrounder backgrounder background eradication background exposure background fade-in background fade-out background film background illumination background image background information background information backgrounding background investigation background investigation background job background limited photodetector background loudspeaker background luminance

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。