something which brings about acceleration, in particular 加速之物,尤指 ■a device, typically a foot pedal, which controls the speed of a vehicle's engine 油门 ■(Physics)an apparatus for accelerating charged particles to high velocities (物理)(使带电粒子加速的)加速器 ■a substance that speeds up a chemical process, typically the vulcanization of rubber or the curing of a plastic (化学过程的)加速剂;促进剂(尤指橡胶硫化或塑料固化剂) ■(Computing). short for accelerator board (计算机)。 accelerator board 的简称