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1. ��ֲ��w��λ��Ӱ��о�

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2. ��ֲͬ�SO2��Ⱦ��ڷ��

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3. ��ͬ��ֲ�SO2��Ⱦ�ķ��

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4. �о��ȡ�ļ��g�ֶ��Mչ

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��,��SO2��Ⱦ��ֲ��Ӱ�δ��l(f��)չڅ��

1. �ɺ��^��΢�^��l(f��)չ

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2. �O(ji��n)�yֲ�SO2��Ⱦ�m��c΢�M��о�

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