时间间隔规则-档案被激活，为的时候，你定(如自午夜至7点)。
Time interval rule - a profile is activated for the time you set (e. g. since midnight till 7 o 'clock).
策略包括规则和到期间隔来确保存储信息的有效性。
The polices include rules and expiration intervals to ensure the validity of the saved information.
与此类似的一幕场景也出现在带槽轮胎上，新的规则规定，所有的轮胎都必须在纵向有4条间隔50毫米深至少2.5毫米的连续沟槽。
This led to the familiar sight of 'grooved' tyres, the regulations specifying that all tyres had to have four continuous longitudinal grooves at least 2.5 mm deep and spaced 50mm apart.
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