时钟偏差（时钟歪斜）
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<timefyi-glossary slug="clock-skew"></timefyi-glossary>定义
分布式系统中两个时钟在某一时刻的时间差。时钟偏差可能导致数据库和分布式应用中的事务排序错误，由NTP和PTP等协议进行测量和限制。