deceleration
noun /ˌdiːseləˈreɪʃn/
  /ˌdiːseləˈreɪʃn/
[uncountable, countable] (formal)- a reduction in the speed at which a vehicle is travelling(使)减速行驶;降低运行速度 - The motor generates energy during braking and deceleration.电机在制动和减速过程中产生能量。 
- Avoid sudden decelerations.避免突然减速。 
 
- The motor generates energy during braking and deceleration.
- the act or process of slowing down; the act or process of making something slower减速: 减速的行为或过程;使某事变慢的行为或过程- a deceleration in economic growth经济增长的减缓 
 opposite acceleration
- a deceleration in economic growth