略語大辞典 [Med] 21 PCL Pink City lung (exerciser) ピンク シティ肺. ヨガの呼吸法(または装置). Pink City lung (exerciser); a device which imposes slowing of breathing and a 1:2 inspiration:expiration duration ratio equivalent to pranayama (yoga) breathing methods; [Med]. 丸善「略語大辞典」JLogosID : 11855100