The compound drilling mechanism of turbodrill is elaborated in detail after analyzing the characteristics of turbodrill and coordination requirements for PDC bits.
从涡轮钻具的特性和PDC钻要求着手,详细论述了涡轮钻具复钻的机理;
The compound drilling mechanism of turbodrill is elaborated in detail after analyzing the characteristics of turbodrill and coordination requirements for PDC bits.
从涡轮钻具的特性和PDC钻要求着手,详细论述了涡轮钻具复钻的机理;
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