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
원자핵분열은 핵 에너지를 생성하는 과정입니다.wonjahaekbunyeoreun haek eneojireul saengseonghaneun gwajeongimnida.Atomic fission is the process of generating nuclear energy.