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
클라이스트론은 고주파 신호를 생성하는 데 사용됩니다.keullaiseuteuron-eun gojubpa sinho-reul saengseonghaneun de sayongdoemnida.A klystron is used to generate high-frequency signals.