“tubing head”的概念、定义、翻译、参考文献-科学参考

单词	tubing head
释义	tubing head [`tüb·iŋ ´hed] ^{PETROLEUM ENGINEERING} A spool-type unit or housing attached to the top flange on the uppermost oil-well-casing head to support the tubing string and to seal the annulus between the tubing string and the production casing string.
随便看	proton acid protonate proton capture proton drip-line proton-electron-proton reaction protonema protonephridium protonic acid proton-induced x-ray emission protonium proton magnetometer proton microscope proton moment proton number proton-proton chain proton-proton reaction proton-proton scattering proton-recoil counter proton resonance proton-rich nucleus proton scattering microscope proton stability constant proton storage ring proton synchrotron proton vector magnetometer

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