1) reverse circulation coring bit
反循环取心钻头
2) reverse circulation sampling bit
反循环取样钻头
3) reverse circulation central sampling drilling
反循环中心取样钻探
4) reverse circulation bit
反循环钻头
1.
Improvement of DTH reverse circulation bit and its emulator on interior fluid field;
潜孔锤反循环钻头体的改进与内部流场的仿真分析
2.
Air driven hollow DTH hammer is applied,along with a set of dual wall drilling pipe and a specially designed reverse circulation bit,to conduct continuous coring reverse circulation drilling.
气动贯通式潜孔锤与双壁钻杆及专门研制的反循环钻头 (获国家发明专利 )配套使用 ,可实现反循环连续取心 (样 )钻进新工艺 ,连续获取的岩样采取率高 ,品质好 ,代表性强。
6) reverse circulation structural parameter of the bit
钻头反循环结构
补充资料：反心
1.背叛之心。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条