“direct or reversecirculation rotary drill”的概念、定义、翻译、参考文献-科学参考

单词	direct or reversecirculation rotary drill
释义	direct or reversecirculation rotary drill Encyclopedia 工学桩工机械释 direct or reversecirculation rotary drill正反循环回转钻孔机依靠钻具回转运动切削地层成孔，以正循环和反循环方式排渣的潜水式钻孔机。
随便看	type of knowledge type of land-use type of museum type of new cities in China type of penalty type of power supply type of prospecting type of publication type of references type of relations type-of-service routing type of shearing type of simplification type of size distribution type of speech acts type of splitting type of symmetry Type of thermodynamic cycle type of translation criticism type of water bursting in mine tunnel type problem type raising typesetter typesetting errors typesetting notice

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。