基本解釋[經(jīng)濟(jì)學(xué)]拖拉機(jī)變速箱操縱系統(tǒng)詞組短語短語tractor transmission control electrical system 拖拉機(jī)變速箱操縱機(jī)構(gòu)電路系統(tǒng)tractor transmission control system更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)拖拉機(jī)變速箱操縱系統(tǒng)