反流交换（机制），逆流交换（机制）[如见于尿生成]

countercurrent multiplier

countercurrent exchange mechanism【生理】

countercurrent distribution; 又称“逆流分布法”。

countercurrent multiplication

countercurrent

countercurrent distribution

countercurrent chromatography; 又称“逆流色谱法”。

countercurrent swimming bath (countercurrent swimming pool)