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Magang may refer to: Masteel Group (马钢集团), also known as Magang (Group) Holding, a state-owned Chinese steel-making enterprise; Maanshan Iron and Steel ...
Julius Edgar Lilienfeld proposed the concept of a field-effect transistor in 1925.. The thermionic triode, a vacuum tube invented in 1907, enabled amplified radio technology and long-distance telephony.