This is the 17400th most frequent Russian word.
температурный
"Температурный" means "temperature-related" or "thermal."
The word 'температурный' modifies 'режим' to specify that the regime is related to temperature.
В лаборатории был измерен температурный режим эксперимента.
The temperature regime of the experiment was measured in the laboratory.
Here, 'температурных' describes 'изменениях', indicating changes related to temperature.
Работа термостата основывается на температурных изменениях.
The operation of the thermostat is based on temperature changes.
In this sentence, 'температурные' describes 'условия', specifying conditions concerning temperature.