maternaladj.母亲的;母系的;母方的;母性的
maternal messenger母体信使
maternal ribosomes母体核糖体
maternal character母体性状
maternal heterosis母本杂种优势,母性杂种优势
maternal education母亲教育
maternal cotyledon母体绒毛叶
maternal relatives母系亲属
maternal affection母爱
Maternal - serum超声
maternal mortality母死率,母性死亡率