The sources of heavy metals pollution are complex, so it is necessary to study the reasons and countermeasures of exceeded quota of it .
重金属污染来源复杂，对中药产品中的重金属元素超标的原因及对策的研究势在必行。
But the surface of overglaze ceramics is uneven. Overglaze ceramics have exceeded risks of heavy metals.
而釉上彩陶瓷制品表面有凹凸不平，有重金属超标的隐患。
应用推荐