凿锤

The air DTH hammer drilling technically mainly used for drilling, shotting drills and wells in the past.

风动潜孔锤钻进技术过去主要用于钻凿爆破孔、基岩水井等。

In order to implement simultaneous casing while drilling of larger diameter pile holes and water wells in complex strata, a new type of bit for simultaneous casing while reverse circulation drilling with DTH air hammer was developed.

为实现在复杂地层用同步跟管钻进工艺钻凿直径较大的桩孔和水井，设计了一种气动潜孔锤反循环跟管钻进钻头。

A battle-ax used in the Middle Ages consisting of a long shaft ending in an ax or a combination of an ax, a hammer, and a pick.

长柄战斧在中世纪使用的一种战斧，由末端为一把斧头或是斧头、锤和凿的结合物的一根长杆构成

Wedge grafts or full-thickness grafts may be removed more easily with a power saw; this technique also is less traumatic than when an osteotome and mallet are used.

应用动力锯切取楔形植骨块或全层植骨块较为容易，并且比用锤和骨凿取骨创伤小。

Wedge grafts or full-thickness grafts may be remoed more easily with a power saw; this technique also is less traumatic than when an osteotome and mallet are used.

应用动力锯切取楔形植骨块或全层植骨块较为容易，并且比用锤和骨凿取骨创伤小。

The answers are found in the hammer and chisel of a sculptor that simply removes the barriers between solid granite most observe and the masterpiece found within or a woodcarver eyeing a piece of wood that has an object of beauty hidden inside .

答案是，发现在锤和凿的雕刻家，只删除之间的壁垒坚实的花岗岩最观察和杰作发现或一 woodcarver 盯上一块木头有一个对象的美感藏。

Wear proper protective gear such as goggles when sanding, chiselling, hammering overhead or scraping.

当铺沙，凿，锤击天花板或刮时，佩带适当的防护齿轮例如风镜。

Carbide alloy electric hammer drill, router bit, chisel, diamond wheel, brad-nailer, electric hammer, demolition hammer, hole saw.

1F72 硬质合金电锤钻头，木工铣刀，钢凿，金刚石锯片，汽钉枪，电锤，电镐，开孔器等。

Connecting with the practices of the shafting work in the water-source location of Sujigou, Zhungghar Banner, this paper expounds the technical details and drilling measures of the downhole hammer in the shafting process.

结合准格尔旗苏计沟水源地凿井工程的实践，阐述了潜孔锤凿井过程中的技术细节和钻进措施。

Veteran glacier spelunkers, or glaciospeleologists, as they call themselves, tell of striking walls inside an ice cave with a hammer to anchor a rope, only to watch a crack hundreds of feet long appear with lightning-fast speed.

资深冰洞探险者们可以身绑保险绳，手持凿锤，深入几百英尺深的冰洞，欣赏洞内千奇百怪的冰洞造型。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。