underwater bed下游河床
underwateradj.在水中生长的;水下的adv.在水下
underwater schlieren水下纹影
underwater oil tanks水下储油
underwater revetment水下挡墙
underwater treatment水下疗法
underwater ship hull水下船体
Underwater cofferdam水下围堰
underwater laser fuze水下激光引信
underwater explosions水下爆炸
underwater microphone水下传声器
underwater trajectory水下弹道