烟囱中位于屋顶上部的部分；它是有几个顶管的烟囱。
The part of the chimney that is above the roof usually has several flues.
文章对泥水平衡法顶管施工工艺中应该注意的几个问题作了主要阐述。
This paper mainly expounds problems paid attention to in plaster balance top pipe construction technology.
现代城市内的污水管道施工，主要采用的是顶管的施工方法。
In modern city sewage conduit construction, what mainly USES is top pipe's job practice.
为慎重起见，拟采用管幕保护下的顶进法施工。
For the case of safety, its construction will adopt pipe-roof culvert box jacking method.
文章对泥水平衡法顶管施工工艺中应该注意的几个问题作了主要阐述。
This paper introduces the theory of jacking pipe technology with balance of soil and water.
文章对泥水平衡法顶管施工工艺中应该注意的几个问题作了主要阐述。
This paper introduces the theory of jacking pipe technology with balance of soil and water.
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