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mountain tunnel造句怎么写

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Compared with mountain tunnel and shield tunnel, the design and calculation method of immersed railway tunnel differs greatly.

Wu-jian mountain tunnel applies now-ao method in Yong Zhang highway construction, the collapse of roof in caused by bad condition roof collapse, and supports the reference of similar tunnel construction.

mountain tunnel造句

In the mountain tunnel construction, the secondary lining concrete crack is a certain universal quality problem.