短語詞組短語longitudinal concrete cofferdam 縱曏混凝土圍堰longitudinal rcc cofferdam 碾壓混凝土縱曏圍堰longitudinal cofferdam concrete placement 縱曏圍堰混凝土澆築earth rock longitudinal cofferdam 土石方縱曏圍堰concrete longitudinal cofferdam 混凝土縱曏圍堰longitudinal roller compacted concrete cofferdam 縱曏碾壓凝土圍堰 返回 longitudinal cofferdam