drill jumbo meaning in Chinese
大型多钻头钻机
凿岩机
凿岩台车
钻架车
Examples
- Design of fm wireless remote controlling device on hydraulic rock drilling jumbo
液压凿岩钻车调频无线电遥控装置设计 - Technology comparison between tri - arm rock drilling jumbo and hand rock breaker used in drilling and blasting construction of luofeng tunnel
萝峰隧道三臂凿岩台车与手持式凿岩机钻爆法掘进施工技术比较