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
탄성률은 재료의 변형에 대한 저항력을 나타냅니다.tanseongnyureun jaeryoui byeonhyeonge daehan jeohangnyeogeul natanabnida.The elastic modulus indicates the resistance of a material to deformation.