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.

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。

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Turkey and China are symmetrical in their relations despite the obvious differences in size and resources.

土耳其和中国在国土面积、资源条件等方面相差很大，但在两国关系上却具有一定的对称性。

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