reduction device

英 美
  • 减速器
  • device n.装置;设备;策略;设计
  • reduction n.减少;降低;减价;(化学)还原反应;(数学)约分
    1. Change oil of the redactor in the drive device annually.
      驱动装置的减速器每年换油。
    2. The reduction gear of the car doesn't work well and should be replaced by a new one.
      这辆车的减速器性能很差,可以换一个了。