“case-crossover design”的概念、定义、翻译、参考文献-科学参考

单词	case-crossover design
释义	case-crossover design Encyclopedia 医学病例交叉研究释 case-crossover design病例交叉研究比较研究对象在急性事件发生前一段时间的暴露情况与未发生该急性事件的某段时间的暴露情况的方法。如果暴露与该事件（或疾病）有关，则在事件发生前一段时间内的暴露频率应该高于更早时间内的暴露频率。
随便看	landforms and landscape devastation Land for mulberry cultivation land for rural residential building land for tertiary uses land founctions land function classification land geophysical exploration land grading land grant college land hierarchy land information database land information management land information system landing area selection landing buffer system landing electrode landing exploration landing flight test landing guidance system landing impact test for lunar probe landing impact test for reentry capsule of manned spacecraft landing joint landing platform landing rocket landing site system

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。