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2 "材料保护" 0.0 0.0 0.0 x_fact 9.691630 y_fact 42.290749
3 "中国腐蚀与防护学报" 0.0 0.0 0.0 x_fact 9.691630 y_fact 18.502203
4 "腐蚀与防护" 0.0 0.0 0.0 x_fact 12.995595 y_fact 16.519824
*Matrix 
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0.962386 0.384116 0.000000 0.762072 
0.822258 0.773408 0.762072 0.000000