roller cone bit

常見例句

On the system dynamics, the dynamics model for roller cone bit under the interaction of drilling string and rock was established.
從系統(tǒng)動力學的角度出發(fā)，建立了基於鑽柱、巖石相互作用下的牙輪鑽頭動力學模型。
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The high grade artificial diamond with the lowest magnetism is picked up to strengthen the surface of steel tooth roller cone bit;
磁選熱穩(wěn)定性良好的優(yōu)質(zhì)人造金剛石作鋼齒牙輪鑽頭齒麪強化材料；
Simulated test was made to indicate the charges in volume and in Pressure of ths lubrication system in a roller cone bit at high temperature and under high pressure downhole.
對牙輪鑽頭潤滑密封儲油系統(tǒng)在井底高溫條件下的容積及壓力變化進行了模擬實騐。