查询词典 hammer-harden

A steel drill with a star-shaped point that is used for making holes in stones or masonry; it is operated by hitting the end with a hammer while rotating it between blows.

用于石器或石匠术钻孔的有星形钻头的钢钻；通过锤子的敲击来工作，两次敲击之间旋转。

The process of down-the-hole hammer drilling is very complex because of its high non-linear,large deformation and damage behavior.

潜孔锤钻头冲击钻进的过程是一个高度非线性、大变形、破坏的过程。

This paper introduced a new type DTH hammer drilling with eccentric simultaneous casing about the structure composition and the design idea.

中文摘要：介绍了新型偏心跟管钻具的结构组成以及设计思路。

During air drilling,under the precondition of high drilling speed,pneumatic hammer drilling technology can validly control the well deflection.

在气体钻井中，空气锤钻井技术解决了不能在打快的前提下控制井斜的难题，是目前最可行最有效的技术。

However this way also has many problems, like drill set structures, drilling technology, which have effect on the DTH hammer drilling way.

但是，风动潜孔锤钻进方法在这些领域的应用，还存在这样或那样有关钻具结构、钻进工艺方面的问题，影响着风动潜孔锤钻进方法的应用和施工效果。

The paper introduced the structure and principle of DTH hammer drilling with concentric simultaneous casing,which used in seismic exploration drill in gravel.

介绍了适合卵砾石地层地震勘探孔施工用的潜孔锤同心跟管钻具的结构和工作原理。5 simultaneous casing

Of drilling equipment including: breaking hammer (new F series and in the Chinese market a good reputation 20G), HD700 series of open-air rig.

凿岩设备包括：破碎锤（新型的F系列及在中国市场上口碑良好的20G），HD700系列露天钻机。

During air drilling,under the precondition of high drilling speed,pneumatic hammer drilling technology can validly control the well deflection.

一、空气锤简介空气锤钻井是一种低钻压、低转速、高冲击破岩的回转钻井技术。

During air drilling,under the precondition of high drilling speed, pneumatic hammer drilling technology can validly control the well deflection.

空气锤钻井是一种低钻压、低转速、高冲击破岩回转钻进技术，它兼容了气体钻井和冲击回转钻井的优势，其机械钻速一般比回转钻井高，是当今解决硬岩钻井难题的一种有效方法。

Hole deviation ; control ; drilling tool ; air forging hammer ; air screw

井斜；控制；防斜钻具；空气锤；空气螺杆

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。