age-class table龄级表
normal age-class模式令级分配;法正龄级
age-class space[林] 林龄空间
age-class method龄级法
Age-class management龄级管理
age-class structures龄级结构
age-class structure年龄结构
age-class distribution龄级分布
age-class period龄级期
同义词：age class