The second, research the acting means of presentiment system, this part is consist of spy and patrol signal fire transferring and recovery per se.
第二部对汉代居延地区候望系统的运作方式进行研究，由侦察与巡逻、烽火传递与烽燧自身的防御等几个方面的内容构成。
The second, research the acting means of presentiment system, this part is consist of spy and patrol signal fire transferring and recovery per se.
第二部对汉代居延地区候望系统的运作方式进行研究，由侦察与巡逻、烽火传递与烽燧自身的防御等几个方面的内容构成。
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