n. <物>（粒子）加速器( accelerator的复数形式 ); 加速者; <化>加速剂; <英>（二轮或三轮的小型）摩托车
英文释义
n. a pedal that controls the throttle valve
n. a valve that regulates the supply of fuel to the engine
n. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected