飞行酒吧都绑在连接链在固定时间间隔。
The flight bars are tied to the link chains at fixed intervals.
用户必须能够在其指定的固定时间间隔自动保存文档。
Users must be able to AutoSave documents on fixed intervals that are specified by the user.
按固定时间间隔发出的采购或生产订单，包括期内变动需求。
A purchase or production order that occurs at a regular interval and covers the variable demand during that period.
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