| 释义 |
DEFINITIVE EXAMPLES 权威例句〔sonar〕A system using transmitted and reflected underwater sound waves to detect and locate submerged objects or measure the distance to the floor of a body of water.声纳：一种系统，通过利用传送或反射的水下声波，来探测或定位水下物体或者测量某一水域的深度美国传统〔sonobuoy〕A buoy equipped with an acoustic receiver and a radio transmitter that emits radio signals when it detects underwater sounds.声纳浮标：一种浮标，上面装配有原声接受器以及在探测水底声音时能发射出电波信号的电波发射机美国传统 |