rationn.定额；定量；配给vt.限量供应；配给ration formulation software日粮配方软件ration of energy efficiency能效比Ration Card Control Officer口粮卡控制官ration of height to thickness高厚比rationing of foreign exchange[经] 外汇分配制ration of performance to price性价比rationed out flour and sugar.发放面粉和粮食。rationing of petroleum products石油产品的定量分配ration standard of construction施工定额标淮ration of science and technology科技理性