summing circuit meaning in Chinese

加法电路
总和线路

Specifically analysed and presented the common - mode differential input stage , linear transconductance control circuit of input stage , current sum circuit , floating ab - class control output stage , the bias circuit of op amps and the bandgap reference current source circuit
具体对运放的共模差分输入级、输入级线性跨导控制电路、电流和电路、浮动ab类输出级电路、运放的偏置电路和带隙参考电流源电路进行分析设计。