Investigation on Dynamic Characteristic of Geared Rotor System Composed of Ultrahigh Molecular Polyethylene Gear and Metal GearDaqian Pang, Changjun Ma, Xin Zhang, Yue Liu and Bingxian ZhuE3S Web Conf., 233 (2021) 04017DOI: https://doi.org/10.1051/e3sconf/202123304017