“naturally occurring radioactive substance”的概念、定义、翻译、参考文献-科学参考

单词	naturally occurring radioactive substance
释义	naturally occurring radioactive substance 天然放射性物质
随便看	library binding library catalogue library command library control statement library directory library editor library facility library file library file descriptor library file editor library function library function routine library information library item library macro definition library maintenance library maintenance routine library management library member library module library name (libname) library package library postlude library prelude library program

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。