深孔钻 meaning in English

deehole drill
depth drill
gun drill
single flute drill

Safety protection and control of deep well drilling
深孔钻的安全保护与控制技术
The trial investigation of deep - holes drilling technics of titanium alloy
钛合金材料深孔钻削工艺研究
An approach to the cause of failure of large diameter long - hole drilling tools
大直径深孔钻具失效原因探讨
Drilling : 10m drilling
钻： 10m深孔钻
Deep - hole drilling
深孔钻削

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