代做单片机毕业设计 研制更适合于浅海工作的潜艇声纳，改善潜艇声纳的工作环境。
Development is more suitable for the submarine sonar, offshore work to improve the working environment.
当应用到军事潜艇上时，它具有被动的声纳所不具备的优势。
In the case of military submarines they would have the advantage over sonar of being passive.
该潜艇使用了一系列技术来降低自身的声纳信号。
It will deploy a number of technologies to reduce its sonar signature.
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