“水力扩张式封隔器”的概念、定义、翻译、参考文献-科学参考

单词	水力扩张式封隔器
释义	水力扩张式封隔器 Encyclopedia 工学桥塞释 hydraulic expansion packer水力扩张式封隔器通过使胶筒内部压力大于外部压力（即使油管压力大于套管压力）而扩张，封隔油、套管环形空间的封隔器。
随便看	database management system, DBMS database marketing database middleware database normalization designing database of engineering survey database of geological survey database of invasive alien species in China database of mineral resources potential evaluation database of national major urban environmental geological survey database of regional geochemical 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

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。