So the methods given in this paper can be used to get some simple inverse Z transform. The partial derivative method and deconvolution method are of practical use.
该文的方法适用于求取较为简单的二维逆z变换问题，尤以偏导数法和逆卷积法更具实际意义。
Because inverse Z transform in the case of 2 D is much more complicated than that in 1 D, which appears in 2 D convergent region or two variates factorization or teriable computations, etc.
二维逆Z变换远比一维情形复杂，表现在二维收敛域、二元因式分解、庞大的计算量等方面。
Because inverse Z transform in the case of 2 D is much more complicated than that in 1 D, which appears in 2 D convergent region or two variates factorization or teriable computations, etc.
二维逆Z变换远比一维情形复杂，表现在二维收敛域、二元因式分解、庞大的计算量等方面。
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