Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
항공자기기상계는 비행 중 기상 데이터를 기록하는 데 사용됩니다.hangongjagigisanggyeneun bihaeng jung gisang deiteoreul girokhanun de sayongdoemnida.The aerometeorograph is used to record weather data during flight.