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[1] �]��h(yu��n).��Ɲ{�켈[M.]�A��W(xu��)��,1990.
[2] ��ǧ.��(du��)��ݝ{�A��ռ��۵��J(r��n)�R(sh��)[J].��(gu��)�H�켈,1999,18(1):14-18.
[3]��a��.С�Ͳݝ{�S�A��յĹ�ˇԭ��[J].��(gu��)�H�켈,1999,18(1):19-22.

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