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Minglin Kang is with the Chongqing Yangjiang Machine Manufacture Co., Ltd., Chongqing 400000, China. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article (www.mdpi.com/2079-6412/10/1/39) is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (creativecommons.org/licenses/by/4.0). It has been edited to conform to the style of Gear Solutions magazine.