(一)哈罗德-多马经济增长模型 Harrod-Domar Economic Growth Model (Neo-classical Growth) 1、中心问题 Central question 个国家在长时期内的国民收入和就业的稳定均衡增长 所需要的收入增长条件? What is the rate of income growth necessary for smooth economic development?（一）哈罗德-多马经济增长模型 Harrod-Domar Economic Growth Model (Neo-classical Growth) 1、中心问题 Central question 一个国家在长时期内的国民收入和就业的稳定均衡增长 所需要的收入增长条件？What is the rate of income growth necessary for smooth economic development?