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