Li Yanping.The solation to optimam work travel angle and retarn travel angle of cam mechanism[J].Mechanical science and Technology,2002,21(3):24-26.是什么意思_Li Yanping.The solation to optimam work travel angle and retarn travel angle of cam mechanism[J].Mechanical science and Technology,2002,21(3):24-26.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句