side-looking sonar 旁视声纳 ; 旁视声呐 ; 旁侧声呐 ; 侧视声纳

side looking sonar 侧视声纳

round looking sonar [船] [声] 环视声呐

round-looking sonar 环视声钠

up-looking sonar 仰视声纳

forward looking sonar 前视声纳

forward-looking sonar 前视主动声纳

upward-looking sonar buoys 仰视声纳浮标

multibeam forward looking sonar 多波束前视声呐