“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	normal family normal family of functions normal fault normal Fermi liquid normal fibration normal field normal field correction normal field extension normal filter normal flora normal fluid normal fluid component normal fluid density normal focus normal force normal forest normal form normal formal representation normal formal series normal form detector normal-form game normal form of a Boolean function normal form of a differential equation normal form of a game normal form of a matrix

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。