It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
It is called Equilateral triangle that a triangle has equal legs.
三条边都相等的三角形叫做等边三角形。
The equilateral pyramid shape allows it to occupy corners of rooms and desks.
正三角体形状让它轻易贴合墙角、桌面。
The equilateral pyramid shape allows it to occupy corners of rooms and desks.
正三角体形状让它轻易贴合墙角、桌面。
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