portable rig meaning in English
轻便钻机
轻便钻探设备
移动式钻机
Examples
- This portable rig can only drill 15m deep holes
这台人抬钻机只能打15米深的井。 - Labor quota for seismic prospecting with portable rig
人抬钻地震勘探劳动定额 - Standard requirements and test methods for testing and rating portable rigging devices for suspended scaffold
悬垂式脚手架用便携式吊索装置的测试和分级标准要求和试验方法