menstrual age

• 月经年龄

menstrual age的用法和样例：

例句

1. When they split the women up according to the age they began menstruating, certain gene patterns appeared.
   当他们根据月经初潮的年龄将女性分类，某些基因图谱就显现了。
2. Probability unit regression and multiple regression methods were used to analyze the relationship between average menarche age, sex development and body constitution.
   采用概率单位回归法及多元回归分析法，进行月经初潮平均年龄及性发育与体质关系的研究。