Munsell's theory, based on light, assume that color is additive and that all the colors of the spectrum, when mixed together, pro duce white light, the common example being sunlight.
The experiment and theory all indicates that the effect of ammonium salt as the degumming nitrogen additive is better than the effect of nitrate as the degumming nitrogen additive.
试验和理论都表明，以铵盐作为含氮添加剂的脱胶效果要好于以硝酸盐作为含氮添加剂的脱胶效果。
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The theory of symmetrical function is used to suppress additive stationary random noise; assumption is that the signal and the noise are mutually uncorrelated.