| 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 |
| 301 | Multiple Acyl Coenzyme A Dehydrogenase Deficiency | 多脂酰辅酶A脱氢酶缺乏 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 302 | Multicenter Studies as Topic | 多中心研究专题 | 1093 | 27 | 183 | 70 | 26 | 5 | 0 | 0 | 0 | 0 | 1404 |
| 303 | Multilingualism | 多种语言能力 | 21 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 25 |
| 304 | Multiple Personality Disorder | 多重人格障碍 | 34 | 0 | 1 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 41 |
| 305 | Myriopoda | 多足纲 | 940 | 29 | 35 | 187 | 2 | 5 | 32 | 0 | 0 | 0 | 1230 |
| 306 | Moths | 蛾 | 5604 | 158 | 238 | 309 | 20 | 27 | 139 | 0 | 0 | 8 | 6509 |
| 307 | MS2 Lateral Line 1 of Forehead | 额旁1线 | 17 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 18 |
| 308 | MS3 Lateral Line 2 of Forehead | 额旁2线 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 |
| 309 | MS4 Lateral Line 3 of Forehead | 额旁3线 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| 310 | MS1 Middle Line of Forehead | 额中线 | 36 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 40 |
| 311 | Malignant Hyperthermia | 恶性高热 | 227 | 4 | 20 | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 258 |
| 312 | Malignant Catarrh | 恶性卡他 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 313 | Malignant Carcinoid Syndrome | 恶性类癌综合征 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 |
| 314 | Malignant Atrophic Papulosis | 恶性萎缩性丘疹病 | 66 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 72 |
| 315 | Mental Disorders Diagnosed in Childhood | 儿童期诊断的精神障碍 | 22492 | 424 | 1370 | 1919 | 141 | 123 | 143 | 0 | 0 | 0 | 26614 |
| 316 | Metformin | 二甲双胍 | 5408 | 313 | 307 | 437 | 17 | 45 | 202 | 0 | 0 | 0 | 6729 |
| 317 | Mitral Valve | 二尖瓣 | 9092 | 144 | 778 | 117 | 52 | 33 | 26 | 0 | 0 | 0 | 10242 |
| 318 | Mitral Valve Insufficiency | 二尖瓣闭锁不全 | 2254 | 40 | 209 | 30 | 21 | 4 | 1 | 0 | 0 | 0 | 2559 |
| 319 | Mitral Valve Prolapse | 二尖瓣脱垂 | 953 | 2 | 43 | 13 | 7 | 3 | 1 | 0 | 0 | 0 | 1022 |
| 320 | Mitral Valve Stenosis | 二尖瓣狭窄 | 4182 | 39 | 171 | 53 | 28 | 19 | 0 | 0 | 0 | 0 | 4492 |