【医】 valvular regurgitation
valve
【医】 valva; valve; valvula; valvulae; valvule
circumfluence; refluence
【化】 back flow; circulation reflux; contra-flow; flow-back; reflux
refluxing
【医】 backflow; palirrhea; reflux reflextonus; refluxing; regurgitation
return; return current