1)bit cutting angle,钻头切削角2)chipping type bit,切削型钻头3)drill edge,钻头切削刃4)large cutting element drill bit,大切削具钻头5)boring head,钻具的切削头6)bit front aggressivity,钻头纵向切削
用法例句
On the basis of experiment results from rock fragmentation by slantly penetrated cutting toolsthe drilling process of large cutting element drill bits is analysed and the penetration rate formulae for large cutting element drill bits in the case of rotary drilling is also derived.
