【摘要】 定义一个名为特征相差的新的物理量，利用它提出判定李萨如图形异同的准则，并研究李萨如图形的对称性、周期性变化等各种特性。更多还原

【Abstract】 Introducing a quantity named characteristic phase difference,in this paper various characteristics of Lissajous figures, such as their symmetry,periodic change have been studied,and a criterion of identity has been of offfered.更多还原