“national life table”的概念、定义、翻译、参考文献-科学参考

单词	national life table
释义	national life table Encyclopedia 理学精算释 national life table国民生命表以某一国家或某一地区为调查对象，依据人口普查资料进行编制的反映一个特定时期内某一国家或特定地区人生存和死亡规律的统计表。
随便看	separated space separated subspaces separated test for the liquid ramjet engine separated topological group separated topological space separated topology separated uniform space separated uniform structure separate financial operation separate layer fracturing separate layer fracturing of vertical well separate layer production string of flowing well separate-layer water distributor separate lining separately continuous function separately harmonic function separate-nucleus hypothesis Separate of Duty separate ratio estimator separate refuse collector separate regression estimate separate regression estimator separate supervision separate ventilation separating

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。