词语vacuum tube
解释真空管
vacuum tube〔名词〕真空管详细»
vacuum tube〔名词〕真空管(电子管)详细»
vacuum tube电子管,真空管详细»
vacuum tube〔名词〕电子管详细»
真空管vacuum tube详细»
真空管thermionic tube;vacuum tube;valve详细»
真空管vacuum tube;vacuum valve详细»
真空管tube;vacuum tuble详细»
真空管depression tube;vacuum tube;vacuum valve详细»
真空管vacuum tube;valve详细»