During normal operating hours of a system, this can have considerable performance implications and slows down the response time of the system.

在系统正常操作时间段，这会显著影响性能，降低系统的响应速度。

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The resistivity of element rapidly rises as the temperature rises, under normal operating conditions , generally the element resistance doesn't change with the service time changing.

二硅化钼电热元件的电阻率随着温度的升高而迅速增加。 在正常操作情况下，元件电阻一般不随使用时间的长短而变化。

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Luton Airport was operating as normal but passengers are advised to allow extra time for their journey to check in.

BBC: Gritting trucks out for more snow

"Flights at Boston Logan are operating normally and are nominally on-time this morning with no increase in cancellations over a normal day, " according to FlightAware CEO Daniel Baker.

CNN: Boston transit shut down; airport open