“转盘钻井”的概念、定义、翻译、参考文献-科学参考

单词	转盘钻井
释义	转盘钻井 Encyclopedia 工学钻井方法释 rotary drilling转盘钻井在钻台的井口处装有转盘，转盘中心旋转部分有方孔，钻柱最上端的方钻杆穿过该方孔，转盘的转动可以驱动方钻杆转动，带动其下端连接的钻柱转动，从而驱动钻头转动破岩，或从事其他需要井下工具旋转的钻井方法。
随便看	frequency modulation radar frequency modulation radio frequency modulation screening frequency modulator frequency multiplication frequency multiplier frequency number frequency of access frequency of alternating current frequency of an event frequency of an oscillation frequency of a wave frequency of disease occurrence frequency offset frequency of language constituents frequency of occurrence frequency of operation frequency of samples frequency of urinatior frequency plane frequency plane mask frequency-plane mask frequency polygon frequency pulling frequency pulling effect

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。