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| Italian | English |
| livello di base | background level Term used in a variety of situations, always as the constant or natural amount of a given substance, radiation, noise, etc. |
| livello di base | background level |
| livello di protezione di base | basic protection level |
| monitoraggio del livello di base | baseline monitoring Monitoring of long-term changes in atmospheric compositions of particular significance to the weather and the climate |
| monitoraggio del livello di base | baseline monitoring |