“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	quality evaluation of forage products quality evaluation of grassland quality evaluation of radioactivity survey quality factor quality factor measurement quality factor of passive resonator quality function deployment design quality handbook quality improvement quality index of fiber-forming polymer quality inspection quality inspection and control Quality Inspection Center of Forest Chemical Products, Bureau of Forestry (Nanjing) quality inspection of prefabricated components quality inspection plan quality intersection analysis quality in the cross section quality in use quality level quality loss function quality management quality management engineering quality management for mineral processing quality management for pharmaceutical analysis quality management information system

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