In 1967, Edgerton's side-scan sonar systems revealed a large, unusually shaped object, which McKee believed was the Mary Rose.

1967年，埃杰顿的侧扫声纳系统发现了一个巨大的、形状异常的物体，麦基认为它就是玛丽·罗斯号。

youdao

The frequencies used in sonar systems vary from infrasonic to ultrasonic.

声纳所使用的频率从次声到超声不等。

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Automatic recognition of underwater targets is one of the key techniques in modern passive sonar systems.

在现代被动声纳系统中，水下目标的自动识别是关键技术之一。

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Promethium is necessary for guided weapons and Dysprosium is employed in sonar systems.

CENTERFORSECURITYPOLICY: Center For Security Policy

For instance, the idea that the Navy's sonar systems are harming whales is about as well based in fact as the 1960s fear that fluoride in our water was poisonous.

FORBES: Fact and Comment

President Bush's administration has come under fire in recent months from environmentalists angered by its reluctance to cut carbon emissions, by its moves to weaken endangered species legislation and by its support for naval use of sonar systems that can kill whales.

BBC: US vows 'huge' marine protection