“ecological trend study”的概念、定义、翻译、参考文献-科学参考

单词	ecological trend study
释义	ecological trend study Encyclopedia 医学生态趋势研究释 ecological trend study生态趋势研究连续观察目标人群中某因素平均暴露水平的改变和某种疾病的发病率、死亡率变化的关系，了解其变动趋势；或者通过比较暴露水平变化前后疾病频率的变化情况，来判断两者间关系的群体研究。
随便看	Systeme Preparatoire Infra-Rouge Pour Alerte satellite system equivalence system error system estimation system evaluation system evolution system expandability system failure of power system system fault diagnosis system fault tolerance system fault tolerance, SFT system feasibility system feedback system flow diagram system flux system follow-up system for buildings with animals system for buildings with plants system for stockpiling reserves of major commodities system for the review of constitutionality system function system generated electromagnetic pulse system generation system ground system hazard analysis

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