coal exploration

短语词组

短语

• 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
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