noun, noun or participle which takes 'suru', intransitive verb
return current; reflux; backflow
Technical term for a current or flow that returns or circulates back, used in fields like oceanography, engineering, and medicine.
この海域には強い還流がある。
There is a strong return current in this sea area.
冷却水が還流する仕組みになっ
The system is designed so that the cooling water circulates back.