1.
Medium Pressure Compressed Air Drilling Technique and Matched Equipment in Soft and Outburst Seam
松软突出煤层中风压空气钻进工艺及配套装备
2.
Research on Air Supply Parameter and Design on Dust Collector for Moderate Pressure Air Drilling in Soft Coal Bed
松软煤层中风压空气钻进供风参数研究及除尘装置研制
3.
The invention of pneumatic drill. This device compressed air to bore holes in the rock.
风钻的发明。这种工具用压缩空气在岩石中打洞。
4.
air compressor suction strainer
空气压缩机进风滤尘器
5.
a drill powered by compressed air.
用压缩空气驱动的钻。
6.
The machinery house air is pressurized and fil-tered by two fan units, one of which is thermostatically con-trolled.
机房空气为正压，并有两层风扇送风装置进行空气过滤，其中一个具有恒温控制。
7.
If the pressure changes over a large area, winds start to blow in a huge circle. High-pressure air(area) is pulled into a low-pressure center.
如果大片地域产生气压差，风开始以巨大的圆形路线行进。高压的空气被牵引到低压区的中心。
8.
Application Prospect of Air Foam Drilling Techniques in Geological Core Drilling
空气泡沫钻进技术在地质岩心钻探中的应用前景
9.
A hand - held machine for drilling rock and breaking up pavement, operated by compressed air.
手挂式风钻，轻型凿岩机通过压缩空气运转的钻岩石、挖隧道的手持机器
10.
Calculation of Eccentric Wellbore Pressure Drop and Air Volume Requirements in Air Drilling
空气钻井偏心井筒压力及注气量计算
11.
A Brief Explanation of Air Actuated DTH Hammer Drilling Efficiency
空气潜孔锤钻进是提高钻进效率的有效途径
12.
The Coaction of Wind Pressure and Thermal Pressure in Air Infiltration Calculation;
空气渗透计算中风压与热压的叠加作用
13.
Application of Air Hammer in Gas Drilling in Puguang Gasfield
空气锤在普光气田气体钻井中的应用
14.
A mouse in a bellows/pressed from Both ends
老鼠钻进风箱里,两头受气
15.
ABRASION OF EXHAUST PIPE BY THE HIGH-SPEED GAS WITH THE CUTTING IN AIR DRILLING
空气钻井中颗粒对排气管的冲蚀分析
16.
If the tunnel draws its air directly from the atmosphere, entirely fresh air is used.
如果风洞直接从大气中吸进空气，那么使用的是完全新鲜的空气。
17.
Application of Drilling Engineering in Fracturing Test Borehole of Gasification Coal Mining
钻探工程在气化采煤压裂试验钻孔中的应用
18.
easing the bit in
钻头轻压慢转钻进地层