“螺杆钻具”的概念、定义、翻译、参考文献-科学参考

单词	螺杆钻具
释义	螺杆钻具 Encyclopedia 理学孔内钻具释 positive displacement motor drill螺杆钻具将钻井循环介质的液压能转化为机械能的容积式孔底动力钻具。简称螺杆钻。
随便看	Forced Migration forced mixer forced mode-locking forced motion forced movement forced nutation forced oscillation forced outage rate forced polygon forced regression forced regressive coal accumulation forced response forced swim test forced synchronization forced transition force due to viscosity forced Van der Pol oscillator forced vibration forced vital capacity force dynamics force equilibrium force equilibrium state force-fed duck force field force field model

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。