The element values of filters can be calculated by permutation method instead of the usual synthesis, i. e. successive complete and partial pole removals from the input impedances.
滤波器的元件值不是用一般的综合方法，即从输入阻抗中逐个移去全极点或部分极点，而是用极点交换法求得。
In order to solve the problem of complete system of orthogonal Latin squares, relation between Latin square and permutation groups is discussed by using method of algebra.
为了解决正交拉丁方完备组问题，利用代数方法讨论了拉丁方与正则群的关系。
In order to solve the problem of complete system of orthogonal Latin squares, relation between Latin square and permutation groups is discussed by using method of algebra.
为了解决正交拉丁方完备组问题，利用代数方法讨论了拉丁方与正则群的关系。
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