One group of arc-shaped balancing segments with the same length and the same radian is preferred.

一组弧形平衡段同长度、同弧度的平衡段为佳。

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One group of arc-shaped balancing segments with the same length and the same radian is preferred.

一组弧形平衡段同长度、同弧度的平衡段为佳。

youdao