For concrete lining construction of long inclined shaft with steep obliquity and big diameter, the construction technology is complex and difficult.
陡倾角大直径长斜井混凝土衬砌施工技术复杂，施工难度特别大。
For concrete lining construction of long inclined shaft with steep obliquity and big diameter, the construction technology is complex and difficult.
陡倾角大直径长斜井混凝土衬砌施工技术复杂，施工难度特别大。
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