air-feed stopper

air feed stoper

压风推进的伸缩式凿岩机

automatic rotation stopper

自动旋转伸缩式凿岩机

auto feed drifter

自动推进架式凿岩机

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

bar rigged drifter

架式风钻，架式凿岩机

" Compressors,rock drilling machines and pneumatic tools-Preferred pressures"

GB/T4974-1989压缩机、凿岩机械与气动工具优先压力

engine ,piston, compression-ignition, for marine propulsion

压缩点火式活塞发动机,船推进用

Simulation Research in Dynamic Process of Valveless Hydraulic Drill;

无阀液压凿岩机动态过程的仿真研究

Development and Application of Efficient Energy-saving Full Hydraulic Rock Drill

高效节能全液压凿岩机的开发和应用

extensible belt conveyer

可伸缩的带式输送机

air compressor suction strainer

空气压缩机进风滤尘器

multiple boring machine [for working metal]

钻探或开凿机械[自动推进的]

wheeled telescopic mobile crane

轮胎式液压伸缩吊臂起重机

Internal Combustion Rock Drill Stem Throttle Parts of Structure to Improved Operational

内燃凿岩机柄体部件油门操作机构的结构改进

hand-held sinker

向下打眼的手持凿岩机

Discussions on Recycle of Hot Exhaust of Air-cooled Air Compressor Station

风冷式空气压缩机站房的热排风回用的探讨

external pressure single type axial expansion joint

外压单式轴向伸缩接头

full circle expanding hydraulic form

全圆形液压伸缩式模板