“观察性研究”的概念、定义、翻译、参考文献-科学参考

单词	观察性研究
释义	观察性研究 Encyclopedia 理学临床试验的自适应性设计释 retrospective study观察性研究在自然状态下对研究对象的特征进行观察、记录，并对结果进行描述和对比分析的研究。
随便看	unrolling unroofing unrooted tree unrounded unrounded articulation UNRRA Unruh effect Unruh radiation unsafe unsafe behavior unsafe condition unsafe events in flight test unsafe factor unsafe factors of road transportation unsalable books unsatisfiability unsatisfiable unsatisfiable set of formulas unsaturated unsaturated basin unsaturated bond unsaturated bond of mineral surface unsaturated color unsaturated fatty acid unsaturated fatty acids

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。