deceleration

• 名词，指速度变化率的降低，尤其指物理学中速度的减小，或减速的过程。

A noun referring to a reduction in the rate of change, specifically a decrease in velocity in physics, or the act of slowing down.

1. Decrease in rate of changeB2formal

   A reduction in the speed or rate at which something happens or changes.

   减速

   • The deceleration of economic growth has caused concern among investors.
   • There was a noticeable deceleration in the spread of the disease after the measures were implemented.
   • The deceleration of population growth is a key demographic trend.

   同义词easingretardationslackeningslowdownslowing

   反义词accelerationquickeningspeedup

2. Rate of decrease in velocityC1formalscientific

   In physics, the rate at which an object's velocity decreases over time.

   减速度

   • The car's deceleration was measured at 5 meters per second squared.
   • The experiment calculated the deceleration of the projectile as it entered the atmosphere.
   • Understanding deceleration is crucial for designing effective braking systems.

   同义词retardationslowdown

   反义词acceleration

3. Act of slowing downB2formal

   The action of reducing speed or slowing down.

   减速

   • The pilot initiated a deceleration to prepare for landing.
   • The deceleration of the train was smooth and gradual.
   • Sudden deceleration can cause passengers to lurch forward.

   同义词retardationslowdownslowing

   反义词acceleration