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
무액의 압력계는 기압을 측정하는 데 사용됩니다.muaeg-ui abryeoggeun giah-eul cheugjeonghaneun de sayongdoemnida.An aneroid barometer is used to measure atmospheric pressure.