本文首先提出了可变周期时间同步算法，是根据最近的时间偏移和时间同步周期来调整同步的时间周期的长度。

Firstly, according to the latest time deviation and time synchronization cycle, time synchronization algorithm is put forward in this article, which is about time synchronization of changeable cycle.

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也是不可变的，周期是97分钟。

Is the period to go around, which is 97 minutes.

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用例4—业务点可变性的生命周期管理。

Use Case 4 - Lifecycle management of business points of variability.

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