Therefore, development of a technology for the submarine to detect the anti-submarine helicopter by monitoring the helicopter radiated noise in underwater is urgently required.
为了提高水下潜艇对抗反潜直升机的能力，需要尽快解决水下对空探测的技术问题。
A detailed research work had been made on helicopter 's anti-submarine control system.
对反潜直升机海上搜潜控制系统进行了详细的研究。
A detailed research work had been made on helicopter 's anti-submarine control system.
对反潜直升机海上搜潜控制系统进行了详细的研究。
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