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
이 평형기는 물체의 균형을 유지하는 데 사용됩니다.i pyeonghyeonggineun mulcheui gyunhyeong-eul yujihaneun de sayongdoemnida.This balance is used to maintain the equilibrium of objects.