词典释义：
涡轮钻具
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钻头配合要求着手，详细论述了涡轮钻具复合钻进的机理；
discharge amount是什么意思_discharge amount单词用法
accused of murder是什么意思_accused of murder单词用法
impresario是什么意思_impresario单词用法
Accusal & accusation是什么意思_Accusal & accusation单词用法
accurateness是什么意思_accurateness单词用法
accurately reflect是什么意思_accurately reflect单词用法
accurately predict是什么意思_accurately predict单词用法
accurately describe是什么意思_accurately describe单词用法
