noun🔗Share早燃,预燃。 The premature detonation of a fuel charge in Four-stroke cycle engines."After using the wrong type of fuel, the mechanic suspected preignition was damaging the car's engine. "使用错误的燃油后,机械师怀疑是早燃在损坏汽车的发动机。technicalvehiclemachineenergyfuelphysicssciencetechnologyChat with AIVocabulary GamePractice Reading