Due to its convenience and economical efficiency, the high-strength concrete shaft lining has been widely used in deep shaft sinking by freezing method.
深冻结井高强混凝土井壁作为一种施工方便、经济的井壁结构被广泛得到应用。
Due to its convenience and economical efficiency, the high-strength concrete shaft lining has been widely used in deep shaft sinking by freezing method.
深冻结井高强混凝土井壁作为一种施工方便、经济的井壁结构被广泛得到应用。
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