“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	male bud removal male cell male cone male contraception male external genital organ male fern rhizome male gamete male gametophyte male germ unit maleic acid maleic anhydride maleimide Malek Haddad male nucleus male parent male parthenogenesis male pronucleus male pronucleus growth factor male reproductive gland male reproductive organ male reproductive system male reproductive system tuberculosis Male Role in Opera male servant male sex-cell

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。