【機】 countercuttent contact

逆流的英語翻譯：

adverse current; countercurrent; backwash; eddy; refluence; reflux
【化】 counter-current flow
【醫(yī)】 anarrhea

接觸的英語翻譯：

contact; contiguity; get in touch with; meet; osculate; osculation; tangency
touch
【醫(yī)】 c.; contact; contiguity; hapt-; hapto-; per contiguum; taction; tactus
touch