daily y rotation 每日转动
The daily rotation had been scheduled to continue for an undetermined period until Boeing was satisfied that all 92 main systems are working as required.
每天的轮换都在按照计划进行，直到波音对所有92个主要系统的工作感到满意为止。
Daily chores must include backups, log rotation, performance measurement (more on this in a moment), patches, and safeguarding all systems.
管理员的日常工作必须包括备份、日志轮转、性能度量(稍后详细讨论)、应用补丁和保护所有系统。
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