“engine variable valve timing control”的概念、定义、翻译、参考文献-科学参考

单词	engine variable valve timing control
释义	engine variable valve timing control Encyclopedia 工学发动机电子控制系统释 engine variable valve timing control发动机可变气门正时控制通过机械、电磁或液压控制等方式，改变发动机气门开始开启和关闭时刻的气门正时，从而改善燃烧过程，尽量减少耗油量和废气排放，从而提高发动机的综合性能的技术。
随便看	flight altitude flight assistant decision-making flight attendant flight attitude flight block of photography Flight condition flight control flight control actuation system flight control computer system flight control of morphing flight vehicle flight control of multi-rotor vehicle flight control system flight control system build in test flight control system flight test flight control system ground test with an aircraft flight control system software flight crew flight crew emergency exits evacuation demonstration Flight crew operation plan flight data recorder systems flight declination correction flight delay flight director system flight dynamics of aircraft flight envelope

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