海洋作为水下声波传播的介质，从通信论的观点来看，海洋就是声信道。

From the point of the view of the communication theory, the ocean, as the media of sound transmission, is called to be underwater sound channel.

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但与人耳可听见的声音相比，鲸鱼更‘擅长’用超声波交流，尤其是在水下。

But whales communicate better through ultrasonic sounds than through human-audible sounds, especially underwater, "he explained."

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在近岸石油勘查中，勘探船牵引着一个声源以及水下捡波器。一个气动装置发出声波，就象气球爆炸那样。

In offshore prospecting a ship tows a sound source and underwater phones. Sound waves are generated by a pneumatic device that works like a balloon burst.

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