查询词典 hammer

Function of air valve for water hammer protection is analyzed with method of characteristics through practical engineering example.

针对长距离有压输水系统的特点，从基本的空气动力学方程入手，分析推导了空气阀的数学模型，并采用水锤计算的特征线方法，进行了空气阀水锤防护的实例分析。

Finally,the paper presented the problems existed in the aspect of using air hammer for geophysical drilling and the direction of studied d.

阐述了影响冲击旋转钻井技术发展的主要因素，提出了气动冲击器用于物探钻井开发方面存在的问题和研究方向。

In this paper, the evolution of air hammer and air bit has been reviewed, the structure, advantages and application con.

为此，对空气锤和空气钻头发展历史进行了简单回顾，介绍了空气锤及空气钻头的结构、使用优点和应用注意事项，重点阐述了空气锤和空气钻头在普光气田的应用效果和出现的问题。

Our air drop hammer 30,000lbs of press capacity, making it one of the largest in Japan.

对异形件加工，在控制要求严格的高温合金，可使用2T，3T.4T，8T 锤锻打。

The economic and social benefits of reforming air steam forging hammer with the power head are analysed.

介绍了25kJ电液模锻锤动力头的形式、用途，分析了25kJ电液模锻锤动力头改造1t蒸空模锻锤所带来的经济效益。

Field of hundreds of square metre, two air hammer, 200 thousand yuan start, 20 more than person does poineering work.

几百平方米场地，两台空气锤，20万元起步，20余人创业。

This paper presented some main factors affecting the development of revolving-drilling technique.Finally,the paper presented the problems existed in the aspect of using air hammer for geophysical drilling and the direction of studied d...

阐述了影响冲击旋转钻井技术发展的主要因素，提出了气动冲击器用于物探钻井开发方面存在的问题和研究方向。

Sales of air hammer parts, accessories, reasonable prices, quality, customs clearance, so far to have 15 small, medium and large enterprises with my alliance.

销售空气锤零件，配件，价格合理，质量过关，迄今为止以有15家大中小型企业与我结盟。

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。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。