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道洞开挖法
meaning in English
pilot method of excavation
Related Words
门户洞开
阿拉霍洞开
导洞开挖
探洞开挖
导洞开采
隧不洞开挖
挖地道
回挖
挖个坑
风挖穴
道洞
道洞掘进
道都主教
道端
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