With the increase of degradation, the diameter of tiller node increased, while the changes of its height apart from above ground were not obvious.
高山嵩草分蘖节直径伴随着退化程度的加大有增加的趋势，分蘖节距离地面的高度变化不明显。
2
How many binary trees can find that haven Node and the heightof these tress are n-3?
有多少二叉树可以发现有n个节点和这些枝条的n - 3的高度吗？
3
In the model, nodeheight difference is combined with direction lane to express the real non-planar road networks and a way of its implementation is discussed.