rotary drilling

常見例句

Based on the principle of conversation of energy, the energy for rotary drilling has been analyzed.
旋轉鉆進是巖土工程鉆探的主要鉆進方式，從能量守恒原理出發(fā)，對旋轉鉆進的能量進行分析。
Theoretically, the impacting-rotary drilling technique is one of the most effective methods of drilling hard strata.
從破巖理論上講，沖擊旋轉鉆井技術是解決硬地層鉆進難題最有效的方法之一。
According to the principle mentioned above, a Model CZT -1 autocontrol device for rotary drilling has been successively developed.
按此設想研制成功了CZT-1型牙輪鉆進參數自動調節(jié)裝置。