فهرست مقالات Pressure angle دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - Analysis of Time–Varying Mesh Stiffness for the Planetary Gear System with Analytical and Finite Element Methods Ali Shahabi Amir Hosein Kazemian 10.30486/admt.2021.1906469.1210