lining concrete construction technology
lining concrete construction technology
衬砌混凝土施工技术
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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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