tunnelersCOCA¹⁸⁹⁶⁶⁹BNC¹⁴⁴⁶⁶⁴⁺³ 基本例句 n.挖掘隧道的人；隧道掘进机原型tunneler的复数 This piece describes the principle, characteristics and advantages of satellite gear reducers, and their applications in foreign machines, such as hell divers, tunnelers and etc. 介绍卫星齿轮减速器的原理、特点和长处及在国外矿山联合掘进机、隧道掘进机等机器中的实际应用。 cnki