temperature regulation; temperature control
Refers to the act or system of adjusting or maintaining temperature, used in technical and everyday contexts.
This machine is difficult to regulate the temperature of.
I bought an air conditioner with a temperature control function.
Similar meaning; 調節 often implies finer or more precise adjustment, while 調整 is broader and more common in compound terms.
Compound of 温度 (temperature) and 調整 (adjustment, regulation).