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
저온학은 물질의 저온 상태를 연구하는 학문입니다.jeo-onhak-eun muljil-ui jeo-on sangtae-reul yeonguhaneun hakmun-imnida.Cryogenics is the study of the behavior of materials at low temperatures.