increase in the rate or speed of something
加速,加快
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the acceleration of the industrialization process 工业化进程的加快
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[in sing.]
an acceleration in the divorce rate .离婚率上升。
【物理】 加速度。
a vehicle's capacity to gain speed within a short time
(汽车的)加速性能
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the three-litre model has spectacular acceleration .三升型车具有卓越的加速性能。