فهرس المقالات Frahad Sajajid المقاله 1 - Design and Fabrication of a Longitudinal-Torsional Ultrasonic Transducer 20.1001.1.27170314.2017.6.1.3.4 Yahya Radi Najafabadi Reza Nosouhi Frahad Sajajid Journal of Modern Processes in Manufacturing and Production , العدد 1 , السنة 6 , زمستان 2017
