水上安全航行区
area safe for surface navigation
喀斯特地区水安全概念
water security concepts in karst areas
潜艇水面航行状态
submarine’s surface proceeding state
全面安全服务
GSS General Secure Service
全面安全服务应用程序接口
GSS-API General Secure Service Application Program Interface
非机动船舶海上航行安全暂行规则
Interim Rules for Safe Navigation of Nonpower-Driven Vessel at Sea
国际安全航行证书
international safety certificate
航行安全通信
navigation safety communication