“three-level preservation System”的概念、定义、翻译、参考文献-科学参考

单词	three-level preservation System
释义	three-level preservation System Encyclopedia 管理学三线典藏制释 three-level preservation System三线典藏制图书馆按照馆藏文献利用率高低及新旧程度，结合服务方式，将馆藏资源依次划分为三个层次，组成一、二、三线书库的藏书布局方法。
随便看	health maintenance in sexual intercourse health maintenance in spring health maintenance in summer health maintenance in winter health maintenance of traditional Chinese medicine health maintenance organization health maintenance through Hilum Therapy health maintenance with acupoint sticking health maintenance with bath health maintenance with herbs health maintenance with moxibustion health maintenance with painting and calligraphy health maintenance with proper diet during convalescence health maintenance with proper diet for women and children health maintenance with proper diet in the elderly health maintenance with scraping therapy Health management health management Health Management Engineering health management for elderly health management model Health management statistics Health Management System health meteorology health monitoring

科学参考收录了854744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。