科学研究需要理论指导，提出假说，操作框架等诸如此类的步骤。

Scientific research is guided by theories, working hypotheses, operational frameworks, and the like.

youdao

科学研究需要理论指导，提出假说，操作框架等诸如此类的步骤。

Scientific research is guided by theories, working hypotheses, operational frameworks, and the like.

youdao