1) shock-free entry
无冲击进流
2) shockless entrance
无冲击进口
3) non-impact current
无冲击电流
4) Turn-on without inrush current
无冲击涌流投入
5) percussive drilling
冲击钻进
1.
Realization of automatic percussive drilling by microcomputer control system;
微机控制自动冲击钻进的实现
2.
GCF-20A reverse circulation percussive rotary drill rig is a multi function drill rig with percussive drilling as the main means and rotary drilling as supplemented.
GCF - 2 0A型冲击 -回转反循环工程钻机是以冲击钻进为主、回转钻进为辅的多功能钻机 ,可适应软、硬岩石等不同地层钻进的要求。
3.
cone bit/disc cutter drilling method, percussive drilling method (no circulation and reverse circulation) and air/fluid powered DTH drilling method, is described with concrete proposals initiated for increasing the technical level of large diameter rock socket drilling.
分析了大口径嵌岩钻进面临的主要技术难点，并对目前国内常用的３种大口径嵌岩钻进方法牙轮／滚刀钻进法、冲击钻进法（包括无循环和反循环）和气动／液动潜孔锤钻进法的技术现状作了介绍，提出了提高我国大口径嵌岩钻进技术水平的建议。
6) percussion drilling
冲击钻进
1.
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
2.
The description is made of the introduction and analysis of the popular drilling hole technique that used in large boulder formation, including normal drilling technique such as digging, percussion drilling, rotary drilling, large diameter DTH drilling, explosion drilling technique and combined drilling technique.
介绍了目前在含巨大孤石地层中的成孔方法 ,包括一般方法如开挖法、冲击钻进、回转钻进、大直径潜孔锤钻进、爆破法、复合钻进工艺。
3.
In which,rotary drilling is suitable to strata with pebbles grain-size<80-100mm, percussion drilling requires total amount of pebbles<200mm not exceed 50%,and strata uniform,while the percussion rotation drilling is suitable to strata contain boulders.
结合施工过的水井实例,介绍了水文水井钻探施工中常用的钻探工作类型:回转钻进,冲击钻进及冲击回转钻进。
补充资料：标准操作冲击电压波形(见冲击电压发生器)
标准操作冲击电压波形(见冲击电压发生器)
standard switching impulse voltage waveform
b .oozhun CooZuo ChongJld，onyo boxlng标准操作冲击电压波形(standard switchingimpulse voltage waveform)见冲击电压发生器。
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