短语词组短語fuel oil saving efficiency 燃油節能傚率Specific fuel energy saving 比燃料能源節約fuel oil saving 節約燃油fuel -saving bulk carrier 節油型散裝貨船fuel saving jet 省油的噴氣發動機Fuel saving automobiles 小排量車marine fuel saving 船舶燃料節約 返回 fuel saving