disthene

例句：

1. 1. Thechemical analysis revealed the presence of trace amountsof disthene in the sample.
   化学分析显示样本中存在微量不纯物。
2. 2. The process of purification involvesremoving all impurities from the rawmaterial.
   净化过程涉及从原材料中去除所有杂质。
3. 3. The scientist carefully removed the disthene and replaced it with a morepure substance.
   科学家小心翼翼地移除了不纯物，并用更纯净的物质替换了它。