“manual casing hanger”的概念、定义、翻译、参考文献-科学参考

单词	manual casing hanger
释义	manual casing hanger [`man·yǝ·wǝl `kās·iŋ ´haŋ·ǝr] ^{PETROLEUM ENGINEERING} A device in the bowl of the lowermost (or intermediate) casing head to suspend the next smaller casing string and to provide a seal between the suspended casing and the casing-head bowl.
随便看	lightning discharge lightning flash lightning generator lightning protection lightning recorder lightning rod lightning stroke lightning surge lightning switch light-of-the-night-sky light oil light-operated switch light panel light pen light pillar light pipe light-positive light projector light quantum light radiation light radius light ratio light ray light-red silver ore light reflex

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。