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
직물학은 섬유의 구조와 성질을 연구하는 학문입니다.jikmulhak-eun seomyu-ui gujo-wa seongjil-eul yeonguhaneun hakmun-imnida.Textile science is the study of the structure and properties of fibers.