“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	Warriors of Heaven and Earth Warriors of the Rainbow：Seediq Bale Warrnambool Wars against William Walker Warsaw Book Fair Warsaw Pact Warsaw University Observatory Warsaw Uprising Warshaw school warship noise control warship shock control warship vibration control war simulation Wars of the Roses Wars with the Veientes Warszawa wart Wartburg Festival war time blood transfusion War-time Class for Opera Performers Wartime Conscription System wartime economic control Wartime Elections Act wartime health service Wartime Measures for Publication Censorship

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。