“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	multiple criteria decision making multiple criteria decision making problems multiple cropping multiple cropping in China multiple cropping index multiple cropping in the world multiple cropping rotation multiple dark soliton multiple decision problem multiple degree of freedom vibration isolation multiple development multiple diffraction multiple dimensional soliton multiple disabilities multiple displacement amplification，MDA multiple divisor multiple-domain coupling analysis for MEMS multiple-dosage regimen multiple dosing administration pharmacokinetic analysis multiple drain mesh multiple dwelling unit，MDU multiple edge multiple-effect absorption refrigeration cycle multiple-effect evaporation multiple eigenvalue

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