“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	γ ray sky γ-ray sky γ-ray source γ-ray source catalog γ-ray spectral line γ-ray spectrometer γ ray spectrometry γ-ray spectrometry γ-ray spectrometry logger γ-ray spectroscopy γ-ray spectrum γ-ray star γ-ray survey γ-ray telescope γ-ray transient γ-risk γ source γ-source Γ space Γ-space γ spectrometer γ spectroscopy γ-spectroscopy γ-spectrum Γ-structure

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。