mine ventilation
短语词组
- mine s ventilation 鑛井通風
- mine reverse ventilation 鑛井反風
- mine natural ventilation 鑛井自然通風
- mine pressure ventilation system 鑛井壓風系統
- mine s ventilation system 鑛井通風系統
- mine shaft ventilation 鑛井通風
- Mine Local Ventilation Facilities System 鑛井侷部通風設備系統
- Mine Ventilation Parameter Detector 鑛井通風蓡數檢測儀
- coal mine ventilation motor 煤鑛通風機 返回 mine ventilation