“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	topologically nilpotent element topologically ringed space topologically simple algebra topologically solvable group topologically stable topologically transitive topological manifold topological manifold with boundary topological manifold without boundary topological mapping topological Markov chain topological meaning topological measure-preserving transformation topological measure theory topological metal topological method topological microbundle topological model topological module topological nature topological nearness space topological node topological n-sphere topological object topological obstruction

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。