rotary percussion drilling

常见例句

Hydraulic rotary-percussion drilling is one of five important drilling techniques recently. Itstechnique nucleus is hydro-percussive tools.
作为当今五大钻探技术之一的液动冲击回转钻探的技术核心是液动冲击器。
Rotary percussion drilling technology is one of major methods to increase the ROP and elongate the bit life when drilling through hard formations.
旋冲钻井技术是解决硬脆性地层机械钻速低、钻头使用寿命短的主要手段之一。
The pneumatic percussion rotary drilling is mainly operated in the area where liquid is hardly or not permitted to be used as the circular medium.
气动冲击回转钻进主要应用于难用或忌用液体作为循环介质的地区。