食盐既是人类不可缺少的食物,又是工农业建设中十分重要的原料。人体内约含有四两多盐,它以钠和氯的离子形式存在,对身体起调节作用,不使水份在某处过多或过少,同时还维持体内的酸碱平衡,不致因酸度(或碱度)的过大而发生病症。盐又象闸门一样,使身体的细胞内液、组织间液和血液分开并保持平衡。 Salt is both an indispensable food for mankind and a very important raw material for industrial and agricultural construction. The body contains about two or two more salts, which sodium and chlorine ion form exists, the body play a regulatory role, not to make too much or too little water somewhere, while maintaining the body’s acid-base balance, not due to acidity (Or alkalinity) is too large and the occurrence of illness. Salt, like a gate, separates and balances the body’s intracellular fluid, interstitial fluid, and blood.