This paper expounded and proved some special geometric relations of the planar crank-rocker mechanisms, gave a new graphic method for designing the planar crank-rocker mechanisms.是什么意思_This paper expounded and proved some special geometric relations of the planar crank-rocker mechanisms, gave a new graphic method for designing the planar crank-rocker mechanisms.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句