countercurrent
n.
逆流；逆电流
adv.
相反地
例句
A new method of tea extraction was introduced， and analyzed the process of countercurrent extraction.
介绍了一种茶叶浸提的新方法，并对逆流提取的过程进行了分析。
Development of New Experiment System of Countercurrent Humidifier
逆流式空气湿化器实验系统的研制
