hydrographical condition水文条件
hydrographical geography水文地理
hydrographical measurement水文测量
hydrographical database海道测量数据库
Hydrographical information水文信息
hydrographical forecasting水文预报
hydrographical data水文资料
hydrographical chart水文地理图;水道图;水系图
hydrographical ship水道测量船;测量船海道测量船;测量船