accelerator
名词 accelerator:
a pedal that controls the throttle valve
同义词:accelerator pedal, gas pedal, gas, throttle, gun
a valve that regulates the supply of fuel to the engine
同义词:throttle, throttle valve
(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
同义词:catalyst
a scientific instrument that increases the kinetic energy of charged particles