coal exploration
短语词组
- coal resource exploration 煤炭资源勘探
- coal seam exploration type 煤层勘探类型
- coal geological exploration industry 煤田地勘单位
- coal field exploration 煤田勘探
- coal geological exploration units 煤炭地勘单位
- Coal Seismic Exploration 煤田地震勘探
- coal geological exploration unit 煤炭地质单位
- coal -exploration direction 找矿方向 返回 coal exploration