This article introduces the systems of front and back projectiles in which CRT or LCD used as the projection devices.

本文介绍了用CRT和LCD作投影器件的前投影和背投影电视系统。

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This article introduces the systems of front and back projectiles in which CRT or LCD used as the projection devices.

本文介绍了用CRT和LCD作投影器件的前投影和背投影电视系统。

youdao