短语词组短語weir and seal plate 堰及密封板flow weir plate 流量堰板Adjustable Weir Plate 可調堰foam weir plate 泡沫堰板straightness of weir plate top 溢流堰頂麪不平度thin plate weir [水利]薄壁堰;薄壁堰rectangle thin -plate weir 矩形薄壁堰 返回 weir plate