“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	travelling-tube method travelling wave travelling wave field travelling-wave laser travelling wave method travelling-wave method travelling wave solution travelling wave [solution]; progressive wave travelling wave tube travelling-wave tube travel meteorological landscape Travel Night Travel Notes by Du Huan of Tang Dynasty Travel Notes of Annan Travel Notes of Dali travel path Travel Permit Travel Photography Travel preferences travel rate of domestic tourists Travel Service Travel Service for Local Reception Travel Service for Package Tour Travel service quality deposit Travels in My Homeland

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