本文给出投入产出技术中直接消耗系数矩阵的性质，以及它在多部门宏观经济中的应用。
This paper gives the properties and applications of direct consumption coefficient matrix in multi - sector macroeconomics.
该方法首先对于直接消耗系数矩阵a按变化类型的不同分块，然后对于每块分别应用RAS法。
In the procedure, the direct expense coefficient matrices a are first separated according to different types of changes into blocks, and RAS is applied to each block.
应用推荐