dry ashing technique

例句：

1. 1.The dry ashing technique is used toremove impurities from the raw materialsbefore they are processed.
   干燥焙烧技术用于在加工前从原材料中去除杂质。
2. 2.This dry ashing technique has been provento be more efficient than traditional methods.
   这种干燥焙烧技术已被证明比传统方法更高效。
3. 3. In the dry ashing process, the raw materials are heated and thenallowed to cool quickly to prevent any potentialcontamination.
   在干燥焙烧过程中，原材料被加热然后迅速冷却以防止任何潜在的污染。