As you may know the helps to maintain the proper coolant temperature by turning the fans on and off at specific temperature thresholds. (yourmechanic.com)
A candy thermometer is a must for this recipe since we need to bring the candy mixture to a very specific temperature. (onesweetmess.com)
Growth increases and decreases appear in our sample above specific temperature index values (temperature thresholds), which occurred more frequently in the late 20th century. (deepclimate.org)