“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	system of resultants system of river conservancy administrations in ancient China system of roots system of rural five-guarantee household system of San Gong Jiu Qing System of Seal and Commander's Tally system of secret appointment of crown prince system of segmental repair and defense of embankments system of selecting of ficers in ancient China system of separating lending survey from loan review and loan origination system of sets system of shares in enterprises system of signs system of solutions system of special protection of labour for underage worker system of spherical coordinates system of strongly elliptic equation system of strongly elliptic equations system of subgroups system of submanifolds system of subvarieties system of systems system of teacher education system of teacher engagement system of testing and appointment

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。