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271. BACs-on-Beads技术对NIPT阳性结果的诊断价值
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272. 基于Ruby On Rails的在线教学辅助系统的设计与实现
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273. All-on-four无牙颌固定义齿修复的临床研究
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274. On embedding infinite cyclic covers in compact 3-manifolds
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275. Research on Impact of Implementing ISO 14001 Environmental M
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276. 浅谈代词on在语用中的模糊性与复杂性
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277. 1-MeV electron irradiation effects on InGaAsP/InGaAs double-
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278. A Report on Translation of Nordic Market Report 2014
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279. IMCI: an efficient fingerprint retrieval approach based on 3
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280. 汉语“上/下”与英语“on/under”的对比及对外汉语教学研究
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