在前人研究和总结的基础上，对近十年以来“唐宋变革”学术史作一回顾与简评。
Based on the researches and summaries, this article tries to make a review of the researches of "Tang-Song Transformation" in the past decade.
方法对我院10年间收治的259例异位妊娠病例的发病趋势，既往病史及节育状况、误诊情况作一回顾分析。
Method Retrogade analysis is made to the occurrence trend, past history, anti-pregnancy condition and wrong diagnosis of 259 cases of ectopia pregnancy which were treated in our hospital in 10 years.
文中仅就焦家金矿应用工程造价管理作一回顾与总结，以期得到同行的帮助与指导。
In this paper, the review and summarization of the application of engineering cost administration in Jiaojia Gold Mine are made in order to get help and guidance from enterprises of the same trade.
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