economy jet省油量孔economyn.经济；节约adj.经济的；廉价的economy in county region县域经济Economy audit evaluating经济责任审计评价economy to enrich people富民经济economy release quantity经济释放量economy and trade majors专业教学economy linkage strength经济联系强度economy column dimension经济柱网economy increasing model经济增长模式economy of time sequence时序经济economy management major高职经管类专业