“生态趋势研究”的概念、定义、翻译、参考文献-科学参考

单词	生态趋势研究
释义	生态趋势研究 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	second of arc second of time second open Second Opium War second order second-order advantage second order arithmetic second-order arithmetic second-order calibration and three-way calibration second-order circuit second order coherence second-order coherence second-order coherence and second-order correlation function second-order constraint qualification second order correlation second order correlation function second-order correlation function second-order curve second order day number second-order derivative second-order design second-order difference second-order differential second-order differential equation second order discrete optimal control law synthesis

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