固n树种 nitrogen-fixing tree ; n-fixing tree species

非固N树种 non-N-fixing tree species

元n树 -ary n-tree

k元n树 k-ary n-tree

N型树脂增韧剂 N Type Resin Flexibilizer

N叉树 N-ary tree

随机N叉树形算法 random N-Ray trees algorithm

数据结构算法N叉树二 data structure N-tree algorithm

n叉树 n-ary trees

m重n叉树 m fold n ary tree