“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	characteristic value characteristic value; eigenvalue characteristic value equation characteristic value of a matrix characteristic value problem characteristic values characteristic variable characteristic variety characteristic vector characteristic vector; eigenvector characteristic vegetable industry characteristic velocity characteristic velocity of rocket characteristic velocity of rockets characteristic water level of reservoir characteristic X-ray characterization characterization and analysis of materials characterization by language characterization factor classification characterization method of phase separation characterization of best approximation characterization of ceramic green body characterization of ceramic powder characterization of hydrocarbon

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。