Underwater acoustic technology is an effective tool to exploit ocean resources, and plays an important role in military.
水声技术是海洋资源开发的有效手段，在军事上也具有重要作用。
Underwater acoustic technology is an effective tool to exploit ocean resources, and plays an important role in military.
水声技术是海洋资源开发的有效手段，在军事上也具有重要作用。
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