应用真值矩阵分析逻辑电路具有直观、简便的优点，并可由其运算结果导出一些对称三值逻辑运算的恒等式。

Application of truth matrix to analyze a logic circuit is intuitive and simple, and the results may lead to the derivation of some identical relations of certain symmetrical ternary logic system.

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投入产出法是根据我国的投入产出表数据以及表中各数据间的关系，利用投入产出表中的两大恒等关系进行运算的。

So this paper also put forward a calculation method to obtain consumption-based intermediate input data based on input-output table.

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