循環 [じゅんかん] /(n,vs,adj-no) circulation/rotation/cycle/(P)/EntL1341340X/ 循環 じゅんかん [1] 名・ス自 Kreislauf; Umlauf; Zirkulation; Rotation. HE 循環 [じゅんかん] /(n) circulation/rotation/cycle/1341340