“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	information system basic environment operation and maintenance information system configuration management information system conversion information system data resource operation and maintenance information system design information system development information system development method information system development mode information system development model information system development technology information system document management information system documents management information system engineering information system engineering audit information system facilities operation and maintenance information system for long term preservation of electronic records information system governance boundary information system governance concept information system governance decision mode information system governance discipline information system governance framework information system governance goals information system governance maturity model information system governance mechanism information system governance method

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