1. 减速度：decelerated motion 减速运动 | deceleration 减速度 | deceleration energy 减速能

2. deceleration是什么意思

2. 减速;减速度：decay correction 衰变修正 | deceleration 减速;减速度 | decipherment 鉴定

3. 负加速度：deceleratingnozzle 减速导流管 | deceleration 负加速度 | deceleration 减速

1. the act of decelerating
    decreasing the speed

    e.g. he initiated deceleration by braking

2. a decrease in rate of change

    e.g. the deceleration of the arms race

    Synonym: slowingretardation

3. (physics) a rate of decrease in velocity