短語詞組短語shape of weir crest 堰頂形狀length of weir crest 堰口長度elevation of weir crest 堰頂高程adjustable weir crest 活動堰頂fixed -crest weir 固定堰頂式堰broad crest weir 寬頂堰crest of weir 堰口;繙譯height of crest over weir 堰上溢流液頭;堰上液流高度rounded -crest measuring weir 圓頂量水堰 返回 weir crest