change - a relational difference between states; especially between states just before and immediately after some event; "he attributed the change to their marriage" " We define the "engraphic effect" of the stimulus as the effect in producing a difference between the key and secondary indifference-states, which difference by https://thermalcyclingforaerospac46789.howeweb.com/36408201/how-mpi-thermal-air-dryer-modules-can-save-you-time-stress-and-money