英和和英

an out-of-date theory

concerned with theory and data rather than practice

of something, to be based on theory

recondite theories

operationalist doctrine

a proven theory

a tentative theory

a theory based on speculation

a theory expressed orally

econometric theories

a theory called {renormalization theory}

construct a theory

construct a theory about

logical and methodical reasoning

the basis of quantum theory

theoretical physics

theoretical physics

accommodate a theory to the facts

an abstract theory

theory-based arguments and positions

inferential reasoning

validate a theory

to set up a theory

to set up a theory

a theory that explains scientific observations

crude theories

untested theory

the basis whereon the theory rests

a consistent theory

a practical theory