| 序号 | 英文主题词 | 中文主题词 | 命中文献数量（篇） |
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| 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 | | 821 | Osteoporotic Fractures | 骨质疏松性骨折 | 1418 | 83 | 280 | 75 | 2 | 18 | 0 | 0 | 0 | 0 | 1876 | | 822 | Out-of-Hospital Cardiac Arrest | 院外心脏停搏 | 39 | 0 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | | 823 | Overbite | 覆牙合 | 291 | 9 | 57 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 357 | | 824 | Oxidative Coupling | 氧化偶联 | 7 | 7 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | | 825 | Ovotesticular Disorders of Sex Development | 卵睾性发育障碍 | 291 | 0 | 16 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 312 | | 826 | 3-Oxo-5-alpha-Steroid 4-Dehydrogenase | 3-氧络-5-α-类固醇4-脱氢酶 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | | 827 | 2-Oxoisovalerate Dehydrogenase (Acylating) | 2-氧代异戊酸脱氢酶(酰化) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | 828 | Oxidoreductases | 氧化还原酶类 | 54606 | 4787 | 4185 | 731 | 234 | 236 | 183 | 1 | 0 | 2 | 64966 | | 829 | Oxonic Acid | 氧尼酸 | 22 | 3 | 3 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 31 |
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