underwater gun水下枪械
underwateradj.在水中生长的;水下的adv.在水下
underwater acoustic telemeter水声遥测器
underwater passive navigation水下无源导航
Underwater Tracking Equipment水下跟踪设备
underwater diamond-wire saw水下金刚石绳锯机
underwater concrete placement水下混凝土浇筑
underwater vehicle simulation深水航行器操纵仿真
Underwater Fire Control Group水下火力控制组
underwater-launched missile水下发射的导弹