“engine knock”的概念、定义、翻译、参考文献-科学参考

单词	engine knock
释义	engine knock [`en·jǝn ´näk] ^{MECHANICAL ENGINEERING} In spark ignition engines, the sound and other effects associated with ignition and rapid combustion of the last part of the charge to burn, before the flame front reaches it. Also known as combustion knock.
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