the acceptability our rejection and the depiction of some content in the course " mechanisms and machine theory " is discussed, ( e . g ., group dividing, solving steps of the graphical method for vector equation, versions and methods for analytical kinematic analysis, inversion design for linkage mechanisms, crank angle between the two limiting positions, design formulae for cam mechanisms, classification of combined mechanisms, formula of the radius of addendum circle of gear,, balancing of machinery, etc . ) and some new opinions are presented 摘要就《機械原理》課程的某些內(nèi)容(如:拆桿組的方法、矢量方程圖解法的解題步驟、運動分析解析法的版本和方法、連桿機構(gòu)的反轉(zhuǎn)法設(shè)計、極位夾角、凸輪機構(gòu)設(shè)計公式、組合機構(gòu)的分類、齒輪齒頂圓半徑公式、機械的平衡等)的取舍和敘述進行探討,提出一些新的看法。