“annular blowout preventer”的概念、定义、翻译、参考文献-科学参考

单词	annular blowout preventer
释义	annular blowout preventer [`an·yǝ·lǝr `blō´au̇t pri´ven·tǝr] ^{PETROLEUM ENGINEERING} A sealing device used in a drilling operation that consists of a large valve, which provides a seal in the annular space between the pipe and the wellbore, or on the wellbore itself if no pipe is present.
随便看	optical spectrometer optical spectroscope optical spectroscopy optical spherical surface optical square optical staining optical storage optical superposition principle optical surface optical system optical thickness optical-to-optical interface device optical tracking optical train optical transition optical tweezers optical twinning optical type font optical waveguide optical window optic angle optic apraxia optic-axial angle optic axis optic canal

科学参考收录了103327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。