“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	minimum work minimum workable width mining abrupt environmental affairs emergency preparedness mining accident mining activity concentration area mining and driving equipment mining and metallurgy in ancient China mining and oredressing techniques in ancient China mining and stripping of open pit mining and stripping order of open pit mining area Mining Area of the Great Copper Mountain in Falun mining area survey mining belt conveyor Mining Big Three of Bolivia mining blasting mining boundary mining capital market mining circular economy mining city mining closure Mining Corporation of Bolivia mining cost mining crusher mining design engineering modeling

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