Seagoen.西戈sean.海；海洋sea surfaee wind speed海面风速sea-floor gravimeter海底重力仪sea-going keel yacht远洋航行龙骨船sea water desalination海水淡化sea surface microlayer海洋微表层Sea Lite Beam Director海洋低盐射束控制器seabuckthorn resources沙棘资源sea water encroachment海水倒灌,海水浸蚀地sea surface topography海面地形学sea-entering channel入海水道