基本解釋[經(jīng)濟(jì)學(xué)]加減計數(shù)機(jī)詞組短語短語adding g and subtracting machine 加減計數(shù)機(jī)adding and subtracting machine更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)加減計數(shù)機(jī)