top and bottom pilot tunneling method

Terms containing top and bottom pilot tunneling method | all forms | exact matches only | in specified order only

Subject	English	Chinese
eng.geol.	top and bottom pilot tunneling method	上下导洞法
tech.	top and bottom pilot tunneling method	水下导洞法
eng.geol.	top and bottom pilot tunneling method toe filter	土坝坝趾处的反滤层