请注意： 你需要选取「自动与网际网络时间伺服器同步化」的空格，「立即更新」键才能运作。

Please note that the "Update Now" button does not function unless the "Automatically synchronize with an Internet time server" check box is selected.

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从时间同步着手，分析了时间同步技术—网络时间协议（NTP）和直接连接时间技术，比较了几种分布式系统的时间同步化策略。

The technology of time synchronization including Network Time Protocol(NTP) and Direct time Connection are analyzed, and some time synchronization strategies of distributing systems are compared.

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