本文给出新的数学表达式，能用图示法形象直观地描绘出“8”字形轨迹，并简明地给出“8”字形的高度和宽度。
In this paper, we give a new mathematical representation, which can present the "8" -shape trace visually with graphic representation and give height and width of the "8" -shape trace in a simple way.
本文给出新的数学表达式，能用图示法形象直观地描绘出“8”字形轨迹，并简明地给出“8”字形的高度和宽度。
In this paper, we give a new mathematical representation, which can present the "8" -shape trace visually with graphic representation and give height and width of the "8" -shape trace in a simple way.
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