Conventional flow switches use flat paddles to detect liquid movement.

传统的流量开关使用平桨来检测液体的运动。

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Besides, with the rapid use of switches in modern network circumstances, the previously used network sniffer programs can not detect the data traffic between other hosts.

另外，随着现代网络环境中交换机的大量使用，传统的网络嗅探器不能再监听到在其它主机之间来回传递的数据包。

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If the specific time when the regime switches can be obtained, the famous Chow test can be used to detect whether a structural change takes place.

如果机制转换的时间点已知，则可以用著名的邹氏检验来确定已知的时间点是否发生结构变化。

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