Building underground channel indoor is an important component part of the north China architecture. But it has been ignored for a long time, as a result, there are a great many quality problems.

建筑室内地沟是北方建筑的一个重要组成部分，但长期以来一直不被人们所重视，导致其存在很多质量问题。

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The ramming pipe drapery is used for support to construct the crossing structures of underground passage, blind channel and etc.

用夯管帷幕作为支护来建造地下通道、暗渠等穿越构造物，在城市建设中是一项新的施工工艺。

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The plan to repair and reinforce the underground inclined channel of a uranium tailings dam and the application of PCC material in the project are introduced in detail.

较详细地介绍了某铀尾矿库排水斜槽维修加固方案和PCC材料在该工程中的应用。

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The snarling Silvio from The Sopranosunleashes deliciously dirty rock at Underground Garage, channel 25 on the Sirius dial.

FORBES

At the moment, despite its lamentable performance, the company is being rewarded by John Prescott, the transport minister, for taking two big problems off his hands: the Channel tunnel rail link and parts of the London Underground.

ECONOMIST: Mending Britain��s rotten railways

Engineers who have assessed the project to build deep underground storage facilities feel it would be a bigger construction challenge than that of the channel tunnel, with tunnelling between 200 and 1, 000 metres.

BBC: Nuclear waste disposal: Where in Cumbria to bury it?