Anechoic coating is crucial to the submarine stealth technology and is a major part of quiet-submarine design.
声学覆盖层是水下航行体隐身的一项关键技术，在安静型水下航行体设计中占有十分重要的地位。
Anechoic coating is crucial to the submarine stealth technology and is a major part of quiet-submarine design.
声学覆盖层是水下航行体隐身的一项关键技术，在安静型水下航行体设计中占有十分重要的地位。
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