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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
2141Political Systems政治制度5974511911663199464832000091958
2142Politics政治28416565825124919421000047731
2143Pollen花粉46452883358719521241016290
2144Pollen Pini松花粉7867498774640001004
2145Pollen Tube花粉管15511002001000259
2146Pollen Typhae蒲黄10994486479190001250
2147Pollination授粉619914858021000837
2148Polonium7107910010190
2149Poloxalene泊洛扎林40000000004
2150Poloxamer泊洛沙姆316172871116000386
2151Poly A聚腺苷酸类5523100200063
2152Poly A-U聚腺尿苷酸类00000000000
2153Poly Adenosine Diphosphate Ribose聚腺苷二磷酸酯核糖1544002000025
2154Poly C聚胞苷酸类1475851101470001556
2155Poly dA-dT聚脱氧腺苷酸-脱氧胸苷酸类00000000000
2156Poly G聚鸟苷酸类00000000000
2157Poly I聚肌苷酸类149913521014100001589
2158Poly I-C聚肌胞苷酸1474851101470001555
2159Poly T聚胸苷酸类00000000000
2160Poly U聚尿苷酸类10000000001
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