test gear中文什么意思

例句与用法

1. 5 . the hob is designed , and testing gears are manufactured
   5 、设计了相应的滚刀并加工出试验齿轮。
2. But the test gear from sony arrived in three boxes weighing 20 kilograms
   不过新力公司寄来的试用器材，却装了满满三大箱，重达20公斤。