underwater kit潜水装具
underwateradj.在水中生长的;水下的adv.在水下
Underwater Operation Unit水下作业队
underwater tapping machine水下开孔机
underwater cleaning device水下清洗设备
underwater object detector水下物体探测仪
underwater sound telephone水下音响电话
underwater bottom concrete水下封底混凝土
underwater weapon training水中武器训练
underwater blasting theory水中爆破理论