branch segments
分支段
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The model of grass and tree is described as a set of connected branch segments. Each segment is assumed that one side is fixed and another is free.
草木模型由互相连接的离散段组成，每个离散段一端固定，一端自由。
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They branch off in various directions with some interconnecting segments.
这些分支在不同方向上某个互联部分。
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