“useful life”概念、定义、翻译-科学时代

单词	useful life
释义	图书馆、情报与文献学词汇手册 useful life 使用寿命，有效期
随便看	privileged class privileged communication privileged communication privileged copyhold privileged debt privileged evidence privileged familiarity privileged familiarity privileged instruction privileged instruction privileged joking privileged mode privileged price privileged relation privileged relationship privileged stratum privilege escalation privilege level privilege level (PL) privilege level--privilege level (PL) privilege management across the enterprise privilege of estate transfer privilege of occurrence privilege ticket privity

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。