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1)  air-driven hammer drill
风动冲击钻
2)  pneumatic percussive rotary drilling
风动冲击回转钻进
1.
The industrial test, including three kinds of drilling technological methods, continuous flight auger boring, ramming and displacing drilling, pneumatic percussive rotary drilling, proved that it s all technical parameters have been strictly examined, the rigs designing quality requirements had been fulfilled and it can suit the needs of our country s anchor con.
通过长螺旋钻进、冲击挤密钻进及风动冲击回转钻进3种钻进工艺方法的工业性试验证明,其各项技术参数达到了设计要求,完全适合于我国锚固工程施工要
3)  the hydro-hammer impact-rotary drilling
液动冲击钻
4)  electric percussion dril
电动冲击钻
5)  pneumatic percussion drill
气动冲击钻
6)  pneumatic DHT hammer
风动冲击器
1.
Last impacting velocity of the piston of pneumatic DHT hammer contacts nearly capability of pneumatic DHT hammer.
风动冲击器活塞的冲击末速度决定了冲击器的工作性能。
补充资料:因水火风动故地动
【因水火风动故地动】
  经云:此阎浮提地,南北阔二万一千由旬,东西阔七千由旬,厚六万八千由旬。地下有水,厚八万四千由旬。水下有火,厚八万四千由旬。火下有风,厚六万八千由旬。风下有金刚轮,过去诸佛舍利,咸在其中。或有时大风忽动,火亦随动。火既动已,水复随动。水既动已,地即随动。故云因水火风动故地动。(梵语阎浮提,华言胜金洲。梵语由旬,华言限量,或四十里,或六十、八十里也。)
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