Usages of loftþrýstingurinn
Mælitækið skráir loftþrýstinginn áður en veðurblaðran hverfur.
The measuring instrument records the air pressure before the weather balloon disappears.
Þótt loftþrýstingurinn lækki, virkar sendirinn ennþá.
Although the air pressure drops, the transmitter still works.
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