“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	Coolidge Prosperity cooling cooling and drafting Unit cooling and heating source equipment cooling and heating source equipment room cooling bed cooling blood for calming endogenous wind cooling by spraying in livestock house cooling catastrophe cooling coil cooling crystallization cooling curve cooling cylinder cooling degree-hour cooling degree of fire-grate cooling effect cooling fan cooling fiber cooling flow cooling flow galaxy cooling for avionics equipment cooling frequency cooling function cooling heating and electrical load cooling history

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