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序号英文主题词中文主题词命中文献数量(篇)
期刊博硕士论文会议论文报纸年鉴成果专利国家标准行业标准标准总计
3108100000000000
3108262611013663152451500007168
3108300000000000
310841100000000011
310850000000000229
31086420759000000108
3108750020000007
310881570405668650355502770041311013230442
3108995222731318181824720210130127
31090000000000090
3109110747382512000001156
310922800100000029
31093348761832633228222607000042268
310942203300000028
3109500000000004080
3109624216135229017547395000029153
3109700000000000
31098504122430212000575
31099588223482230000731
311000000000000485
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