短語(yǔ)詞組短語(yǔ)parabolic thin -plate weir 拋物線形量水槽rectangle thin -plate weir 矩形薄壁堰planthouse tail water thin -plate weir 廠房尾水薄壁堰thin plate notch weir 薄壁缺口堰 返回 thin plate weir