In the 250 meters underwater covert action sail.

它在水下250米进行秘密潜航动作。

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For this they required a more complicated setup, and a little covert action.

这次他做了一点改动，使实验设置更为复杂了些。

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Contrapose to the main character of submarines covert action, this paper introduces the analytic hierachy process (AHP) to solve the problem of threat evaluation.

针对潜艇行动隐蔽的主要特点，引入层次分析法来解决潜艇威胁度评估问题。

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Contrapose to the main character of submarines covert action, this paper introduces the analytic hierachy process (AHP) to solve the problem of threat evaluation.

针对潜艇行动隐蔽的主要特点，引入层次分析法来解决潜艇威胁度评估问题。

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