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
측지학은 지구의 형태와 중력을 연구하는 학문입니다.Cheugjihak-eun jigu-ui hyeongtae-wa junglyeog-eul yeonguhaneun hakmun-imnida.Geodesy is the science that studies the shape and gravity of the Earth.