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混凝土围堰
hydroel.st. concrete cofferdam
混凝土围堰由混凝土为主构筑的围堰称为混凝土围堰。混凝土围堰常用于在岩基上修建的水利枢纽工程
expl. concrete cofferdam
混凝土围堰: 8 phrases in 1 subject
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