基本解釋[經(jīng)濟(jì)學(xué)]筒形活塞發(fā)動機(jī)詞組短語短語trunk k piston type engine 筒形活塞發(fā)動機(jī)trunk piston type diesel engine 筒狀活塞型柴油機(jī)single -acting trunk piston type engine 單作用筒形活塞式發(fā)動機(jī)trunk piston type engine更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)筒形活塞發(fā)動機(jī)