基本解釋[經(jīng)濟(jì)學(xué)]手控式開(kāi)關(guān)調(diào)節(jié)器專業(yè)釋義經(jīng)濟(jì)學(xué)手控式開(kāi)關(guān)調(diào)節(jié)器