对我国非开挖技术的现状进行了论述。
At last this paper discusses the status in quo of trenchless technology.
水平定向钻进铺管技术是一种现代的非开挖施工新技术。
The horizontal direction drilling technology is a new one in modern non-excavating construction.
水平定向钻进铺管技术是一种现代的非开挖施工新技术。
The horizontal direction drilling technology is a new one in modern non-excavating construction.
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