usu totoWibowo, Toto (Universitas Sumatera Utara, 2014) Damage or wear and deformation will change the dynamic characteristics of the system and tends to increase the vibration energy. To1.1K+ followers · 944 following · 0 posts · @usu9771: sintang Kalimantan barat katholik✝️ tariu Borneo bangkule rajank