relative ramification index

例句：

1. 1. The relativebranching index of the tree is a measure of its structural complexity.
   这棵树的相对分支指数是衡量其结构复杂性的指标。
2. 2. In forestry, the relative branching index is used to determine the growth rate of trees.
   在林业中，相对分支指数被用来测定树木的生长速率。
3. 3.The relative branching index can be affected by various environmental factors, such as temperature and rainfall.
   相对分支指数可能会受到各种环境因素的影响，如温度和降雨量。