减法

The difference is found by subtraction.

用减法得出差额。

In this stage, the subtractor rejects the 5V common-mode signal from the voltage reference.

这个阶段，减法器抵消了电压参考5V共模信号。

Additive mixture ofcolortrichroism is red,green and blue,subtractive mixture,as its complementary colors,is cyan,ma genta and yellow,thatis the dyestuff trichroism.

颜加法混三原、绿、蓝,减法混三原则是补,即:青、品黄,染料三原是后者。