论文部分内容阅读
人们习惯上将体内占总体重1/10,000以下的元素称为微量元素。其中有些微量元素是维持生长发育、生殖以及正常健康所必需的。因为微量元素的作用与酶
People used to be the body of the total weight of 1 / 10,000 the following elements called trace elements. Some of these trace elements are necessary to maintain growth, reproduction and normal health. Because of the role of trace elements and enzymes