formiminoglutamic acid英美亚氢甲基谷氨酸化学双语例句Studies on the effect of vitamin B12 and folic acid on radiation damage 1. urinary excretion of formiminoglutamic acid维生素B(12)与叶酸对辐射损伤的效应研究&一、尿中亚胺甲基谷氨酸排出量