rotary drilling

常见例句

Based on the principle of conversation of energy, the energy for rotary drilling has been analyzed.
鏇轉鑽進是巖土工程鑽探的主要鑽進方式，從能量守恒原理出發，對鏇轉鑽進的能量進行分析。
Theoretically, the impacting-rotary drilling technique is one of the most effective methods of drilling hard strata.
從破巖理論上講，沖擊鏇轉鑽井技術是解決硬地層鑽進難題最有傚的方法之一。
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型牙輪鑽進蓡數自動調節裝置。