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
자구는 자석의 자기적 성질을 결정하는 중요한 요소입니다.jaguneun jaseogeui jagijeok seongjireul gyeoljeonghaneun jungyohan yosoimnida.The magnetic domain is an important factor that determines the magnetic properties of a magnet.