Vitamin B1 is a 19th century Dutch doctors Aikman obtained from rice bran extract, is that people first discovered as a vitamin.

 
  • 维生素B1是19世纪末荷兰医生艾克曼从米糠中提取制得的,是人们最早发现的一种维生素。
今日热词
目录 附录 查词历史