入侵特征对于入侵检测系统至关重要，它们往往由系统属性和事件序列组成，时序关系是描述它们的关键。

Intrusion signatures are important in intrusion detection system, they are usually composed of the system attributes and event sequences, in which time plays a critical role.

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入侵特征由系统属性和事件序列组成，时序关系是描述它们的关键。

Intrusion signatures are usually composed of the system attributes and event sequences, in which time plays a critical role.

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时间推理是人们对事件的时序、时距和时点进行推论的心理过程。

Time reasoning is a mental process to infer the succession, duration and focus of events.

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