The Air Force plans to replace the two jumbos now best known as Air Force One in2017. 空军计划在2017年更换这两架现在以“空军一号”著称的大型飞机。
Application of Multi-boom Rock Drilling jumbos in Advance Pre-grouting Hole Drilling during Construction of Mined Tunnels 多臂凿岩台车在矿山法暗挖隧道超前预注浆施工中的应用技术研究
Microcomputer Control of Drilling Jumbos 凿岩台车的微机控制
This piece introduces in a bit detail the advantages of underground trackless auxiliary vehicles constructed with universal chassis, the structural characteristics of the model WG-2 oil ejecting vehicle and model WF-2 maintenance vehicle. The operation state when assisting LHDs and drill jumbos is concerned also. 较详细地介绍了采用通用底盘构成井下无轨辅助车辆的优越性,WG-2型油车与WF-2型维修车的结构和工艺特点以及与铲运机、凿岩台车配套使用情况。