“数据库试用”的概念、定义、翻译、参考文献-科学参考

单词	数据库试用
释义	数据库试用 Encyclopedia 管理学数据库试用释 database trial数据库试用数据库商为了销售数据库产品，在一定时间内为图书馆开通数据库免费使用权限的活动。
随便看	reduction condition reduction criterion reduction current reduction descending reduction division reduction elimination reduction factor reduction firing reduction formula reduction half reaction reduction half-reaction reduction homomorphism reduction in process reductionism reductionism methodology of psychology reduction machine reduction management of agrometeorological disasters reduction manipulation reduction matroid reduction-matting smelting reduction method reduction modulo m reduction of a complex space reduction of a fraction reduction of an elliptic curve

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。