“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	doctor of engineering doctor of medicine doctor of sciences doctor of veterinary medicine doctor-patient communication doctor-patient non-technical relationship doctor-patient relationship doctor-patient technical relationship doctor practicing license system doctor's degree certificate Doctor Who doctor workstation system Doctor Zhivago doctor’s obligations Doctrina Brum doctrinal theology doctrine of affactions Doctrine of American System Doctrine of Brezhnev doctrine of comity of nations doctrine of commencement of action by law doctrine of emanation doctrine of evil human nature doctrine of filial piety doctrine of form and spirit

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