retentate
n. (在渗析过程中未能通过半透膜而被保留下的)保留物;滞留物
例句
The retentate after pervaporation, which has rich nutrition and plenty of organic acids, can be made into acidic beverage.
膜上渗余液营养丰富,含有大量的有机酸,可用于生产苹果酸性饮料。