substruction的英语例句
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a substructure of timber piles
木桩下部结构
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Seepage is one of the ubiquitous problems in substructure work.
地下工程结构渗漏是地下建筑物中普遍存在的问题.
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The substructure is a box - on - box design for easy installation.
采用无棚绳前开口型井架,整体起升, 低位 安装,方便快捷.
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