Variable speed device of elliptical gears was used to complete the sinusoidal vibration and the vibrative regular of the improved mould was analyzed.是什么意思_Variable speed device of elliptical gears was used to complete the sinusoidal vibration and the vibrative regular of the improved mould was analyzed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句