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1·First, they erect four wooden pillars painted with fern leaf veins.

首先，在平坦的场地上树起四根绘有蕨叶纹的木牌柱。

2·Look at a fern leaf, a cauliflower, and a magnified snowflake to see this distribution of sizes graphically.

看看蕨叶、菜花和放大的雪花，我们能从图形上看到尺寸的分布。

3·And builds some mathematics models. Using these models and methods, some nature scenes are simulated successfully, for example: terrain, tree, leaf and fern etc.

利用以上方法，建立一些描述具体自然对象的数学模型，成功地模拟了山峦、树木、树叶和蕨类等自然景物。

4·The lotus leaf fern Adiantum growth conditions of the study also stay in more qualitative analysis.

对于荷叶铁线蕨生长条件的研究也多停留在定性分析上。