Description: period of time during which a system or component is operational and in service, but not in use; Name: it
Description: Time interval throughout which an item is in an idle state; Name: Idle time
Description: minimum boundary value of the temperature range, in which an operating unit can be used, without serious changes of assigned features, depending on the exposure time. Temporal restrictions like short-time or durability have to be stated; Name: min. temperature range