“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	process analytical technology process analyzer process and equipment for preparing biological base material process and equipment of additive manufacturing Process and Reality process annealing process approach process arrangement efficiency process art process assessment Process Automation Instrumentation process average process average fraction nonconforming process average rate of defectives process balance Process bottleneck analysis Process capability process capability process capability analysis process capability estimation process capability index process capability indices process capability maturity process capability study process chart

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