研究人员表示，还需要更多的长时间随访的研究，在这次的分析的研究报告中，期限都没有超过12周。
The researchers say more studies are needed with longer follow up, which did not exceed 12 weeks in the studies reviewed.
相关分析、研究资料由有关部门负责保存，保存期限为计划执行完毕后再加一个日历年；
The analysis and research documents are to be retained by the departments concerned for a period of one calendar year after the implementation of plan is completed.
利率期限结构分析是资产定价、金融产品设计、保值和风险管理、套利等的基础。
Analysis of the term structure of interest rate is the basis of asset pricing, financial product design, hedging and risk management, arbitraging and so on.
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