请教图书馆通道系统的问题...

<p>在通道门禁系统中，主、副闸机是如何选配的？比较3通道，3个主机，1个副机还是2主机，2副机？请教高手指点。谢谢！</p>

<p>要看用户是如果要求的，具体情况具体对待</p>

已解决，谢谢

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