Literature research of air hammer drilling in domestic and overseas.
国内外空气锤钻井技术的文献调研。
This paper collects air hammer' using status in oil and gas fields drilling site at home and abroad.
收集了国内外空气锤技术在油气田钻井现场的使用现状。
The contents of the paper include:the comparison of the electrohydraulic hammer and the steam—air hammer;
其中包括：电液锤与蒸汽-空气锤工作状况的比较；
This paper collects the typical structure of air hammer, understands the principle, determines the design principles and methods.
收集了国内外典型的空气锤结构，了解空气锤工作原理，确定了空气锤结构的设计原则及方法。
But that changes the instant you set eyes on some of the items set to go under the hammer next month as part of a sale of the contents from the Bel Air home that Michael was renting.
而这一事实，则使得部分将要出现在下个月举行的拍卖会上的物品显得与众不同，因为届时迈克尔曾在百莱荷租赁的房屋中的部分遗物将会进行拍卖。
She found a match with a man wearing overalls and wielding a hammer in his profile photo and invited him over to install her air conditioning.
她和一个在简介照片中身穿工装裤、手持榔头的男人配对成功，然后邀请他来帮她装空调。
The air-driven down-hole hammer drilling is still very effective and speedy in well drilling in karst limestone area.
在水文水井中，气动潜孔锤钻进仍可发挥它高效率、高速度的作用。
Taketo enforcement of such grip hammer Ji, zoned air-strike case, impassioned.
武人执之如握锤戟，划空击案，慷慨激昂。
Owing to spatial confined, the paper enumerates air supply pressure and backpressure which influence the working parameter of the DTH hammer only.
由于文章篇幅的限制，仅列出了气源压力、背压对空气锤工作参数的影响规律。
It is posed that angular air-hammer self-excited vibration and half frequency wobble self-excited vibration are two reasons for resulting angular wobble self-excited vibration for gas film face seals.
提出造成气膜端面密封角向摆动自振的内在机理，既有半频摆动自振又有角向气锤自振。
The research results provide theoretic guide for field application of air tank to water hammer control.
研究结果对现场使用空气罐来控制水击提供了理论指导。
Installing air surge tank in pressure water system is a new and economically efficient measure to prevent water hammer accident.
压力水系统中设置气压式调压室是防护水锤事故的、新的、经济有效的措施。
The impulsive force of the hammer of the Machine can reach 30t, to replace the big hammer, and air pick, which can well treat with the cement concrete.
该机器锤头冲击力可达到30t，代替大锤、风镐，是水泥混凝土的克星。
The valve is mainly made up of body, disc, axle, rocker and heavy hammer etc. It realizes discharging and air locking using trimming moment.
重锤锁气翻板卸灰阀主要由阀体、阀板、阀轴、摇杆、重锤等零件组成，利用力矩平衡的方法实现锁气卸灰。
The loose tooling forging of half shaft bushing on the steam-air forging hammer is numerically simulated using FEM software DEFORM3D.
采用商用有限元软件DEFORM3D对半轴套管胎模锻成形过程进行了计算机模拟。
The solution of problems such as water hammer, hard to dispose the noncondensables, air lock and selection of steam trap were discussed to save energy, protect environment and lower the cost.
指出蒸气凝结水回收的重要性的同时对炼油厂蒸气凝结水回收系统中存在的诸如水击、非凝结性气体不能排除、气阻及疏水阀的选型安装等问题的解决办法进行了探讨。
Once dust is discharged, the torques from hammer and rocker will close quickly and realize air lock.
一旦积灰卸去后，重锤与摇杆产生的力矩使阀板迅速关闭，实现锁气。
The protection against the water hammer is introduced in this paper as follows: changing the character of the pipeline network, protection of by-pass pipe and the air bottle.
介绍了几种常见的水击防护措施，如改变管网系统的特性、旁通管防护、空气罐防护等。
C is hammer automatic restore structure which is characterized by small area, saving energy, convenient adjustment and dependable discharge dust and air lock.
C为吊锤自动复位机构，具有占地面积省、节能，卸灰调节方便，卸灰、锁气可靠之功能。
C is hammer automatic restore structure which is characterized by small area, saving energy, convenient adjustment and dependable discharge dust and air lock.
C为吊锤自动复位机构，具有占地面积省、节能，卸灰调节方便，卸灰、锁气可靠之功能。
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