投入产出法是一种比较成熟的、在许多国家中得到广泛应用的一种现代化管理数学方法。是美国经济学家列昂节夫(苏联人)于1936年提出来的。在第二次世界大战期间开始得到重视。1944年美国劳动统计局曾经利 Input-output method is a mature mathematical management method which is widely used in many countries. It was proposed by the United States economist Leonidov (the Soviet Union) in 1936. During the Second World War began to get the attention. 1944 US Bureau of Labor Statistics has been Lee