rotary drilling

常见例句

Based on the principle of conversation of energy, the energy for rotary drilling has been analyzed.
旋转钻进是岩土工程钻探的主要钻进方式，从能量守恒原理出发，对旋转钻进的能量进行分析。
Theoretically, the impacting-rotary drilling technique is one of the most effective methods of drilling hard strata.
从破岩理论上讲，冲击旋转钻井技术是解决硬地层钻进难题最有效的方法之一。
According to the principle mentioned above, a Model CZT -1 autocontrol device for rotary drilling has been successively developed.
按此设想研制成功了CZT-1型牙轮钻进参数自动调节装置。