潜艇航行状态
submarine’s proceeding state
潜艇潜航状态
submarine’s proceeding state underwater
潜艇航行记录仪
submarine flight recorder
潜艇航行训练模拟器
submarine voyage training simulator
潜艇潜望深度航行状态
submarine’s proceeding state at periscope depth
潜艇水面航行状态
submarine’s surface proceeding state
潜艇通气管航行状态
submarine’s proceeding state with snorkel
海中入水潜水技术
man-in-the-sea diving technique
核潜艇艇员
nuclear-powered submarine’s sailors
long term voyage