短語詞組短語secondary dam crest 二壩壩頂dam crest structure 壩頂結(jié)構(gòu)Dam crest crack 壩頂裂縫dam crest dam top 壩頂DCL dam crest level 壩頂高程dam crest reinforcement 壩基加固structure of dam crest 壩頂構(gòu)造defomation of dam crest 壩頂變形width at dam crest 壩頂寬度 返回 dam crest