coal exploration
短语词组
- coal resource exploration 煤炭資源勘探
- coal seam exploration type 煤層勘探類型
- coal geological exploration industry 煤田地勘單位
- coal field exploration 煤田勘探
- coal geological exploration units 煤炭地勘單位
- Coal Seismic Exploration 煤田地震勘探
- coal geological exploration unit 煤炭地質單位
- coal -exploration direction 找鑛方曏 返回 coal exploration