短语词组短语weir and seal plate 堰及密封板flow weir plate 流量堰板Adjustable Weir Plate 可调堰foam weir plate 泡沫堰板straightness of weir plate top 溢流堰顶面不平度thin plate weir [水利]薄壁堰;薄壁堰rectangle thin -plate weir 矩形薄壁堰 返回 weir plate