食盐的化学名称叫氯化钠,它既是工业原料,也是人们生活中不可缺少的食用品。它有助于维持人的正常血容量,并控制人体细胞内外水分的流通。此外,对于神经脉冲的传导、蛋白质和糖的代谢也起着重要的作用;它又是维持人体的酸平衡和某些酶活性所必不可少的物质。在古代,食盐被视为珍品。古罗马人祭祀时,盐是最上等的祭品。在古埃及,人们随身携带一把食 The chemical name of salt is sodium chloride, which is both an industrial raw material and an essential food for people’s lives. It helps maintain normal blood volume in humans and controls the flow of water inside and outside the body’s cells. In addition, the metabolism of proteins and carbohydrates also plays an important role in the conduction of nerve impulses; it is also essential for maintaining the body’s acid balance and certain enzyme activities. In ancient times, salt was regarded as treasures. When ancient Roman sacrifices, salt is the most superior sacrifice. In ancient Egypt, people took a handful of food