如今，锻造师们使用风动锤，因为它的噪音更小，但是生产效率则不及以前。
Now blacksmiths use pneumatic hammers which produce less noise but are also less productive than the first ones.
主要是采用风动潜孔锤同步跟管钻具造孔，可控灌浆技术进行灌浆堵漏。
The hole is drilled by downing hole hammer and controllable grouting is used in prevention with ideal result.
文中回顾了在建桥工程中，应用风动潜孔锤钻进桥桩桩孔的经验，具体介绍了使用的设备、工具及施工工艺技术。
The experience of pile hole drilling using pneumatic hammer in bridge construction is reviewed. Equipments, tools and techniques are also described in detail.
实验以WC- 70潜孔锤为对象，研究泡沫对风动潜孔锤的影响。
This experiment based on WC-70 DTH hammer, study the influence of foam on the DTH hammer.
实验以WC- 70潜孔锤为对象，研究泡沫对风动潜孔锤的影响。
This experiment based on WC-70 DTH hammer, study the influence of foam on the DTH hammer.
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