piercer是什么意思

网络释义

用法例句

Discussion of borehole burst experiment and the stress criterion of rock burst;

钻孔冲击实验与冲击地压应力判据的探讨

The borehole burst experiment is introduced.

通过对钻孔冲击试验方法的介绍,以及对钻孔冲击试验结果的分析,证明存在一个临界压力,可作为发生冲击地压的应力条件的判据。

Key Construction Technology and Problem Treatment on Impact Bored Pile

冲击钻孔灌注桩施工要点及问题处理

Construction technique of shock drilling pile of Wulongsugou super bridge of Zhun-Shuo railway

准朔铁路乌龙素沟特大桥冲击钻孔桩施工技术

Analysis on the Technologies and the Treatment of Common Problems in the Construction of Compact Bored Pile

冲击钻孔桩施工工艺分析及常见问题的处理

Downhole drill hammers and drills

GB/T13344-1992潜孔冲击器和钻头

Analysis and Treatment of an Accident of Blocking Bore of Excavated Hole Driven Cast-in-Place Pile by Percussion Drill

一起冲击钻成孔灌注桩卡钻事故的分析与处理

Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.

（1）钻孔使用配套冲击电钻.钻孔时,孔洞间距与孔洞深度应满足设计要求.

The Pore-forming Mechanism Study of Cam Bit on Percussive-Rotary Extruding DTH Drilling

凸轮型冲击回转挤压钻头成孔机理的研究

Numerical Simulation of Shock Wave in Water of Underwater Drilling Blasting

水下钻孔爆破水中冲击波的数值模拟研究

Numeric simulation of borehole pressure relief preventing roadway rockburst of a mine

钻孔卸压防治巷道冲击地压的数值模拟

Discussion on application of borehole pressure reliefcontrol rockburst hazard

应用卸压钻孔防治冲击地压灾害的探讨

Penetration Mechanism of DTH Percussion Compact Drilling and Experimental Research on Compact Bit;

潜孔锤冲击挤密钻进机理及挤密钻头的设计与实验研究

Diamond drilling replaced percussion drilling.

金钻探取代了冲击钻探。

A. Position the bores according to the product. Drill φ 6 bores respectively with impact driller, after the center line for bolt bore is drawn in the appropriate position on the wall.

根据产品安装孔位，在墙面相应位置画出螺钉孔中心线后，用冲击钻分别钻φ6孔。

Start collaring with reduced throttle to the impact mechanism and feeding, let the bit work its way slightly into the rock.

开孔时，应采用最小的冲击和推进力，使钻头平稳地进入岩层。

Application of Cable Drilling Filling Pile in Foundation Construction of Hydraulic Engineering

冲击钻成孔灌注桩在水利工程基础施工中的应用

Application of borehole stress tester monitoring in the prevention and control of pressure bumps

南屯矿钢铉钻孔应力计监测在冲击地压防治中的应用

rotary wash-boring equipment

旋转式水冲钻孔设备

hand churn drill

手动钢绳冲击式钻机