“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	closed shell closed shell ion closed-shell ion closed shell molecule closed simplex closed solid sphere closed solution closed space closed sphere closed star closed string closed subalgebra closed subbase closed subcomplex closed subfield closed subgroup closed submanifold closed subscheme closed subset closed subspace closed substructure closed subsystem closed subvariety closed surface closed surface integral

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