Liver and kidney are particularly rich in vitamin A.肝脏和肾脏富含维生素A。Details are available from the Hon. Sec. A.R. Bushby.详情可咨询名誉秘书A.R.布什比。I was assigned to Troop A of the 10th Cavalry.我被派往第10骑兵队的A连。...
探讨了稀土化合物用作环保汽油抗爆剂的可能性.Capabilities using rare earth compounds as environmentally friendly gasoline antiknocks were explored.介绍了MMT抗爆剂在中国石油锦西石化公司的使用情况.The article introduces the application status of MMT antiknock additiv...