acceleration

英 [?ksel?'re??(?)n] 美[?k's?l?'re??n]
  • n. 加速，促進(jìn)；[物] 加速度

英英釋意

1. an increase in speed;
"modern science caused an acceleration of cultural change"
2. the act of accelerating; increasing the speed
3. (physics) a rate of change of velocity