A new colour CRT without shadow mask are introduced in this paper. Its structure, operating principle and properties are discussed here. The developed model tube is also described.是什么意思_A new colour CRT without shadow mask are introduced in this paper. Its structure, operating principle and properties are discussed here. The developed model tube is also described.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句