TY - Journal of Shandong University(Engineering Science) A1 - JI Yuebo, WU Wangxian T1 - A method of reducing the slip in radial direction of the traveling wave type rotary ultrasonic motor Y1 - 2016-06-30 JF - Journal of Shandong University(Engineering Science) JO - Journal of Shandong University(Engineering Science) SP - 112 EP - 116 VL - 46 IS - 3 UR - http://gxbwk.njournal.sdu.edu.cn N1 - 10.6040/j.issn.1672-3961.0.2015.282 ER -