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2 "中华口腔医学杂志" 0.0 0.0 0.0 x_fact 4.173913 y_fact 14.782609
3 "牙体牙髓牙周病学杂志" 0.0 0.0 0.0 x_fact 10.956522 y_fact 27.478261
4 "实用口腔医学杂志" 0.0 0.0 0.0 x_fact 16.521739 y_fact 37.043478
*Matrix 
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0.502079 0.472336 0.000000 0.459696 
0.580873 0.463364 0.459696 0.000000