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
입자선은 고에너지 물리학에서 중요한 역할을 합니다.ipjasneun goeneoji mulrihakeseo jungyohan yeoghal-eul hamnida.The particle beam plays an important role in high-energy physics.