| 摘要 |
an envelope having a face plate, a funnel and a neck ; a phosphor screen formed on the inside of the face plate and which emits light in the three colours (red, green and blue) ; in-line electron guns arranged in the neck to generate and direct three electron beams towards the screen, the beams being in-line and mutually parallel in the horizontal direction of the phosphor screen ; a shadow mask arranged in the vicinity of the phosphor screen and having a large number of apertures to make the electron beams selectively impinge on the screen.
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