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首頁英語詞典acceleratoraccelerator英英釋意

accelerator

英 [?k'sel?re?t?] 美[?k's?l?'ret?]
  • n. 油門；催化劑；[機] 加速裝置

英英釋意

1. a pedal that controls the throttle valve;
"he stepped on the gas"
2. a valve that regulates the supply of fuel to the engine
3. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
4. a scientific instrument that increases the kinetic energy of charged particles