冲击器

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。

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。

The model had good duplicability and stability through the method of establishing the animal model in which the simple operative method,small wound and convenient nurse was obtained so easilyis that the animal model was spread easily.The study of the change of short and long period was made to provide the experimental base and reason through the animal model.

结论通过自制冲击器冲击兔右侧髋臼软骨，模拟冲击伤机制，初步建立髋臼软骨冲击伤实验动物模型并量化冲击能，通过统计学分析，大体和组织病理学检查，并与国外动物模型相比，本模型重复性和稳定性好，术式操作简单，创伤小，护理方便，易于推广，为研究活体动物髋臼软骨冲击后的短期和长期变化提供实验基础和依据。

Particles from burning of incense, rice stalk, cigarettes, generator, and diesel engines were collected by an impactor (Harvard Impactor 2.5) and an impinger (AGI-30). ED-XRF and ICP-MS were used to measure particle element component on filters and in suspension, respectively.

本研究以二种不同之采样方式，包括Harvard Impactor PM2.5冲击器及AGI-30冲击瓶（Harvard Impactor及Impinger）分别采集数种特定污染源所产生之微粒（PM2.5），并以ED-XRF及ICP-MS分别分析滤纸及悬浮液中微粒之元素组成。

This paper discusses the wonting principle ot the vaive-type counter-actmg nyaraunc impact too1s , and presents methods for calculating impact force and impact frequency.

本文论述了阀式反作用液动冲击器的工作原理，提出了计算冲击力和冲击频率的方法。

In order to decrease the loss energy, a new kind of sleeve valve of hydraulic impactor is designed. It takes the technical measure of cone valve and optimum unequal polite of valve. The sleeve valve has features of little leakage, little pressure loss and low energy cost.

为了降低能源消耗，研制了一种新型的液压冲击器配油阀，该阀采用锥阀阀口形式和优化的不等阀开口量技术，使配油阀泄漏量小，阀口压力损失小，换向运动能耗低，液压冲击器效率高。

Series hd high air-press dth are designed as a hammer drill. they differ from other rock drills, however, through continuous operation down against the drill bit.

hd系列高风压冲击器是一种冲击凿岩工具，但他与其它凿岩工具不同的是，凿岩过程中它始终留在孔的底部，活塞直接冲击钻头。

According to the field applications of jet type hydraulic percussion tool s,the main problems which affect the development rotary percussion drilling technology are put forward.

论述了冲击旋转钻进技术在石油钻探中应用的技术优势，探讨了冲击旋转钻井工具的发展现状及存在的问题；并根据射流式液动冲击器现场试验应用，阐述了影响冲击旋转钻进技术发展的的主要问题，提出了提高冲击旋转钻井工具应用效果的几点看法。

percussion drilling ; rotary drilling ; jars ; performance ; parameter ; penetration rate

因此，冲击器是冲击旋转钻井中的核心工具，它的性能优劣决定了冲击旋

So it can adjust the strike energy and frequency independently and steplessly. The new kind hydraulic rock breaker can operate under vary conditions and develop the operation efficiency.

由于实现了冲击器冲击能和冲击频率的独立无级调节控制，使碎石机能适应各种工况的需要，提高了工作效益。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。