Underwater tow水下拖曳underwateradj.在水中生长的；水下的adv.在水下underwater hydraulic balanced launcher水压平衡式水下发射装置underwater sound-absorbing materials水声吸声材料underwater acoustic position-setting水声定位underwater battery fire control system水声武器射击控制系统underwater sound reconnaissance mapper水声侦察仪underwater television mine-dectector水下电视探雷器underwater low-light-level imaging水下微光成像underwater sound equipment compartment水声设备室underwater long-range missile system水下远程导弹系统underwater acoustic information system水声信息系统