Various substances in plant extracts may cause spontaneous or non-specific precipitation. 植物提取液中的各种物质都可能引起自发的或非专化性的沉淀。
Solvent extraction technique in the refining of platinum metals has many obvious advantages over the traditional precipitation method. 铂族精炼中的溶剂萃取法比传统的沉淀法具有许多优点。
