contamination precipitation的用法和樣例：
例句
- Various substances in plant extracts may cause spontaneous or non-specific precipitation.
植物提取液中的各種物質(zhì)都可能引起自發(fā)的或非專(zhuān)化性的沉淀。 - Solvent extraction technique in the refining of platinum metals has many obvious advantages over the traditional precipitation method.
鉑族精煉中的溶劑萃取法比傳統的沉淀法具有許多優(yōu)點(diǎn)。
