ocean-floor[海洋] 洋底
ocean n floor海床;洋底
ocean-floor map洋底图
ocean-floor producer海底生产井
ocean basin floor洋盆区;洋盆底
ocean-floor basalt洋底玄武岩
ocean-floor spreading海底扩大说
ocean-floor metamorphism洋底变质作用
ocean-floor spreading hypothesis洋底扩张假说;海洋底扩大假说;海底扩张假说
同义词：ocean bottomseabedsea bottomDavy Jones's lockerDavy Jones