percussion drilling的例句大全

Living things throve in Devonian strata of the nappe, and their species were numerous. APPLICATION OF ROTARY PERCUSSION DRILLING TECHNOLOGY IN REVERSE THRUST NAPPE STRUCTURE FORMATION

旋冲钻井技术在逆掩推覆体地层的应用

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The Shape, Protection and Treatment of Plum Blossom Hole for Percussion Drilling

冲击钻孔中梅花孔的形成、预防及处理

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Problems of impact rammer in percussion drilling of pebble bed

冲击钻进卵砾石地层中冲击锤问题的探讨

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According to the field applications of jet type hydraulic percussion tools, the main problems which affect the development rotary percussion drilling technology are put forward. At last several opinions are concluded about how to improve the efficiency of rotary percussive drilling tools.

并根据射流式液动冲击器现场试验应用，阐述了影响冲击旋转钻进技术发展的的主要问题，提出了提高冲击旋转钻井工具应用效果的几点看法。

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Diamond drilling replaced percussion drilling.

金钻探取代了冲击钻探.

词典精选例句

It is difficult to calculate the penetration rate ( ROP ) of percussion drilling.

钻井机械钻速预测是难题.

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CZ-1200 percussion drill was developed to improve and perfect the performances and structures of CZ-22 cable percussion Rig used in diaphragm wall, bored pile and water well drilling engineering in China.

针对目前国内防渗墙、灌注桩桩孔施工及水井钻凿的主要设备CZ-22型钢绳冲击式钻机在使用过程中的一些不足之处，研制开发了CZ-1200型冲击钻机。

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the result shows that the bounces of anvil and bit lead to the many times of percussion of the impact hammer drilling system.

结果表明，由于砧子及钎头的反弹，导致冲击锤钻凿系统发生多次冲击现象。

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a study on the percussion reversed drilling method

冲击反循环钻凿方法应用研究

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percussion drill of tk model has been serialized and occupies first place in our country in amount of drilling, scope of application and maximum drilling depth.

本所研制的TK型冲击器已系列化推广，其钻进工作量、使用地区范围、最大钻进深度均居全国首位。

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The research of percussion and rotary drilling technique of geothermic well

地热井射流式冲击器冲击回转钻进的分流试验研究

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Drilling process analysis of the CJF 20 percussion drill rig of reverse circulation

CJF-20冲击反循环钻机钻进工艺技术分析

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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。

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Tangible Results Achieved in Hard Formation Drilling with Percussion Type Wire Rope Coring Tools

绳索取心冲击回转钻具钻进硬岩效果显著

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Jamming often takes place during percussion rotary drilling.

用冲击回转式凿岩机凿岩时卡钎是经常发生的.

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