“user class of service”概念、定义、翻译-科学时代

单词	user class of service
释义	图书馆、情报与文献学词汇手册 user class of service 用户服务级别
随便看	calendar year life table calendar year table calender calender calender calender calender calender calender bonded nonwoven fabric calender coating calendered moiré calendered paper calendering calendering calender line calender man calender mark calender roller calender server calendrical rite calendrical rite calendrical system calendula Calendula calentura

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。