关于萃取的一小段翻译? “use this sheet to specify the key components used to identify the first and second liquid phases. extract can treat the first liquid phase as either the solvent/extract or feed/raffinate phase.” 这里面as either.....or....应该怎么翻译?solvent/extract与feed/raffinate中“/”表什么意思? solvent 溶剂s feed 进料f extract 萃取相e raffinate 萃余相r查看更多