A fuel injector for fuel injection systems of internal combustion engines has a valve-closure member that is in working engagement with a valve needle and that coacts with a valve-seat surface, positioned in an orifice of a valve-seat member, to form a sealing seat; and has at least one spray discharge opening positioned in the valve-seat member. The eyeglasses further include an auxiliary frame having a second pair of lens holders separated by a bridge portion formed to include a protruding grip extension that extends perpendicularly outward from the auxiliary frame. The receiving portion and the oscillating portion are connected through the supporting portion such that the ultrasonic wave received by the receiving portion is transmitted to the oscillating portion through the supporting portion. Other embodiments may also be described andor claimed. The design structure may also specify that the processor controller enables the previously disabled processor core when the previously disabled processor core cools sufficiently to a normal operating temperature.