分步萃取 by solvent extraction: 溶剂萃取净化extraction into solvent: 溶剂萃取extraction solvent: 抽提剂; 提取剂; 萃取剂;抽提溶剂; 萃取溶剂solvent extraction: 溶剂淬取; 溶剂浸出; 溶剂浸提; 溶剂提取; 溶剂萃取法; 溶剂萃然溶剂抽取; 溶剂萃然溶剂抽提stepwise countercurrent extraction: 分段逆流抽提下载手机词典可随时随地查词查翻译