economicaladj.节俭的;经济的;合算的
economical efficiency of systems制度经济性
economical and high-efficiency节能高效
economical principle of thinking思维经济原则
economical efficiency evaluation经济性评价
economical and technique indices经济技术指标
economically feasible technology经济适用技术
economically inactive population经济上非活动人口
Economical Use of Formal Methods形式化方法的经济使用