non-theoretical       
adjective (also nontheoretical) uk/ˌnɒn.θɪəˈret.ɪ.kəl/ us/ˌnɑːn.θiː.əˈret̬.ə.kəl/
 非理论的;实用的;理论性不强的
based on the practical uses of a subject, rather than on a theory or theories
  Archaeology used to be viewed as purely a non-theoretical discipline, but that is no longer true. 考古学曾被视为纯粹是非理论的学科,但现在已不再如此。 
 Their approach is non-theoretical in that it is not based on any specific economic model.
 - More examples
 - At this time, literary criticism was decidedly nontheoretical and subjective.
 - She prioritized data over theory in her non-theoretical approach to research.
 - Developers need to be able to demonstrate non-theoretical applications of the software.