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Terms for subject Engineering geology containing 导洞 | all forms | in specified order only
ChineseEnglish
上下导洞法top and bottom pilot tunneling method
导洞pilot bore
导洞pilot tunnel
导洞pioneer tunnel
导洞drift heading
导洞平巷尽端foot of drift
导洞开挖法pilot method of excavation
导洞法pilot method
施工导洞竖井construction shaft
隧道导洞pioneer bore

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