查询词典 percussion hammer

The drill rigs are a kind of fast drilling equipment which is rotated by an air motor, pushed by one or two air cylinders and the low or middle air pressure DHD hammer could be used.

演练钻机是一种快速钻井设备是由一个旋转的空气马达，推由一个或两个空气气罐及低或中等空气压力dhd锤，可用于。

By analysis of enforcement of drilling tools of air downhole hammer 's following pipe, the factors affecting the drilling speed and depth of the following pipe are obtained.

通过对空气潜孔锤跟管钻进钻具的受力分析，得到影响潜孔锤跟管钻进速度和跟管深度的因素。

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。

Modular designed rig makes it has lighter weight for easy movement to reduce auxiliary time to get more efficiency and a middle air pressure DHD hammer to be used makes the rig can drill at higher speed.

模块化设计的钻机，使有重量轻，方便运动，以减少辅助时间，以获得更多的效率和中间的空气压力dhd锤将用于使钻机可以钻在更高的速度。

Factory was established in 2001, is located in the southeastern part of Hebei Province, the famous Chinese Tube Base - Mengcun County, factory production flange to the main, the existing air hammer 2 Units, lathe.

本厂成立于2001年，位于河北省东南部，著名的中国管件基地-孟村县境内，本厂以加工生产法兰为主，现有空气锤2台，车床。

To correct direction, first only the air hammer among located in the position corresponding to the correcting direction is actuated and only the ground in the correcting direction is drilled by a predetermined amount.

在方向修正时先仅使其位置与修正方向相对应的气锤工作，仅对该修正方向的地基按规定量进行挖掘。

It is difficult to drill or can not drill if we use routine methods, using through down-hole hammer air drill method not only raise rate of drilling, but also reduce pollution to the aquifer, promoting exploration and development for the deep underground water.

利用贯通式潜孔锤多工艺空气钻进方法不仅能提高钻进速度，而且能减少对含水层的污染，为深层地下水的勘探开发提供了技术支持。

It is recommended to adopt air hammer, pendulum assembly and air motor to minimize or eliminate the well deviation during gas drilling.

建议在现场推广应用空气锤、钟摆钻具组合和空气螺杆钻具组合三项气体钻井防斜技术来防止气体钻井井斜。

An introduction is made of air springs Model S-200-2 with dual barrels developed by Nanchang University,and of structure and calculation of vibration i solation system for 75kg air hammer with a inertial block support by the springs .

本文介绍了南昌大学所开发的S 2 0 0 2型双曲囊式空气弹簧，以及以该空气弹簧为隔振元件的 75kg 空气锤惯性快式隔振系统的结构特点和设计计算。

Refer to the damage problem to the motor of C41-400 air hammer caused by driving system fault, an acknowledged improvement that is adding a V-belt driving into the system has been promoted with failure situations occasionally because of irrational supporting structures.

针对C41-400型空气锤由于传动系统故障而导致电动机损坏的问题，通常的改进方案是增加一级V带传动，但由于对改造中的支承设计不合理而失败的情况也时有发生。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。