additive colour mixture的用法和样例：
- law of additive colour mixture
- Additive colour mixing The mixing of additive primaries to match a specific colour.
- Additive colour mixing: The mixing of additive primaries to match a specific colour.
- In additive colour mixing, it is the colour required to mix with a primary colour to produce white, or in subtractive colour mixing, a colour re -quired to mix with a primary colour to produce black.