“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	semi-normal ring semi-normal variety seminormed space seminose semiochemicals semiologie cinématographique semi on-line scheduling semi-on/off-line composite semiopaque semi-open interval semi open semi closed interval semi-open semi-closed interval semi open system semi-orbit semiorder semiordered semiordered set semiordered space semiordering semiorder linear space semioscillation semiosis semiotic semiotic aesthetics semiotics

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。