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1·Additive colour mixing: The mixing of additive primaries to match a specific colour.

加法混色：混和加色法原色，使它与某一指定颜色相似。

2·Red, green and blue lights are called additive primary colours because by the combination of these three primaries in different proportion , various coloured lights will produce.

红、绿和蓝三种色光称为加色法原色，因为不同份量的三原色，可以混合成各种不同色光。