spillway crest
... spillway bridge 溢道桥 spillway control device 溢洪控制设备 spillway crest 溢道顶 ...
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坝顶溢洪道 crest spillway ; overfallspillway
设闸的溢洪道顶 obstructed crest of spillway
溢洪道堰顶宽 width of spillway crest
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