“难词词典”的概念、定义、翻译、参考文献-科学参考

单词	难词词典
释义	难词词典 Encyclopedia 文学词典释 dictionary of difficulties; dictionary of hard words难词词典早期词典编纂的一种主要类型，针对有一定理解和使用难度的语词进行必要的解释。
随便看	database of surveying and mapping datum data base of values and facts database operation managemen database outsourcing database performance evaluation database performance tuning database physical structure design Database Publications database publishing database query monitor database recovery database reliability database reorganization database restructuring database security database security design database storage database system database system design database testing database theory database trial database tuning database watermark data broadcasting

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。