decelerator編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看deceleratordecelerator — 名詞名詞1. a device that reduces speed or rate of motion1.名詞釋義減速器a device that reduces speed or rate of motion例句The train's decelerator failed, causing it to overshoot the station.