“hydraulic expansion packer”的概念、定义、翻译、参考文献-科学参考

单词	hydraulic expansion packer
释义	hydraulic expansion packer 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	Radio Correlator radio counterpart Radio DDR radio depth radiodermatitis radio determination satellite service,RDSS radiodiagnosis radio diameter radio direction finding radio dish radio disk radio disk temperature radio Doppler effect radio dosimeter radio double source radio early-type emission-line star radio echo radio echo method radio eclipse radioeclipse radioecological concentration radioecology radioelectrochemical analysis radioelectronics radioelectrophoresis

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。