空くう気き調ちょう節せつ器きMeaningsNoun1. pneumatic controller2. air flow regulatorKanji used空empty air気state of mind調tone節joint器instrumentComposed of空くう気きair; atmosphere; mood; situationNoun調ちょう節せつregulation; adjustment; controlNoun器きdevice; instrument; vessel; container; ability; capacity; calibre; caliberNoun