underwater gun水下枪械
underwateradj.在水中生长的;水下的adv.在水下
underwater vertical launching水下垂直发射
underwater gamma spectrometer水下γ射线光谱仪
underwater contact explosions水下接触爆炸
underwater accidental falling潜水坠落
underwater orientation system水下定位系统
Underwater Society of America美国潜水运动协会
underwater initiative imaging水下主动成像
underwater acoustic detection水声探测