Complex sentence: In addition to the delivery of thermal energy, the transmission of ultrasonic vibratory energy creates an ultrasonic softening effect within the atomic lattice of the preheated lead wire which dramatically facilitates its deformation in forming the desirable contact area using relatively low temperatures and forces.
Split into simpler sentences: In addition to the delivery of thermal energy, the transmission of ultrasonic vibratory energy creates an ultrasonic softening effect by interacting with the atomic lattice of the preheated lead wire. These two softening effects dramatically facilitates the lead wire deformation by forming the desirable contact area using relatively low temperatures and forces.