diamond-head buttress dam 大头坝

round-head buttress dam 圆头支墩坝

round head buttress dam [水利] 圆头支墩坝

massive head buttress dam 大头坝

diamond head buttress dam 方头支墩坝

massive-head buttress dam 大头坝

supporting pier solid-head buttress dam 支墩大头坝

massive-head double buttress dam 双支墩大头坝