单词	pre-ignition
释义	pre-ignition /priːɪɡˈnɪʃ(ə)n / noun [mass noun] The premature combustion of the fuel-air mixture in an internal combustion engine.Early ignition or runaway pre-ignition causes higher combustion chamber temperatures that can wreck the engine.... High-octane fuel simply allows the higher pressures and temperatures in these high-output engines by preventing pre-ignition. To run an engine on unleaded fuel it may be necessary to retard the initial timing to prevent detonation and/or pre-ignition.
随便看	numerical taxonomy numerical value numeric keypad numeric pad numerist numerological numerologically numerologist numerology numerosity numero uno numerous numerously numerousness numerus clausus nu metal Numic Numidia Numidian Numidian marble numina numinal numinosity numinous numinously

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。