相关单词近义词 power train 动力系, train 列车, gear 传动装置, gearing 传动装置临近词Gearty, gear, gear-planetary ring, gear-broach machine, gear shift lever knob, gear change mechanism, gear parameters table, gear tooth engagement, gear slotting machine, gear shift fork shaft, gear tooth comparator, gear-shaving cutter 返回 geartrain