To get the full benefit out of cooking in copper, the metal must be 1/8 inch thick and the handle should be of heavy iron.
但若真想体验到用铜锅烹饪的妙处，那锅子至少要有1/8英寸那么厚，而且必须要有沉甸甸的铁制锅柄。
The heavy metal elements which was measured was Lead, Cadmium, Chromium and Copper.
测定的重金属元素包括：铜、铅、镉、铬。
The harm and the administering means of acid wastewater containing heavy metal ion for copper processing factory were introduced in this article.
介绍了铜加工厂重金属离子酸性废水的危害及治理方法。
The harm and the administering means of acid wastewater containing heavy metal ion for copper processing factory were introduced in this article.
介绍了铜加工厂重金属离子酸性废水的危害及治理方法。
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