The phrase "a solid theoretical basis" is correct and usable in written English.
It can be used when discussing the foundational principles or concepts that support a theory or argument in academic or professional contexts.
Example: "The research presented in this paper is built upon a solid theoretical basis, ensuring its validity and reliability."
Alternatives: "a strong theoretical foundation" or "a robust theoretical framework."
It has a solid theoretical basis and has made great success in practical applications.
The key contribution of this paper is to put these tradeoffs and observations on a solid theoretical basis.
Research into the chemical constituents and biological activities of mung bean seeds and sprouts have provided a solid theoretical basis for the development and utilization of mung beans.
On the other hand, ESO does not have a solid theoretical basis, and consequently, the ESO minimization problem is still unresolved.
The method proposed by Tang Y et al. [10] has a solid theoretical basis, which can locate voltage sag source with an accuracy of 100%%, in power networks with various topologies.
For instance, the vast majority of papers is mostly heuristic and lacks a solid theoretical basis.
IM provides an implementation strategy framework in which a solid theoretical base and the participation of the IPs is integrated.
The GEV distribution, however, was preferred to the GNO and PE3 because it was based on a more solid theoretical basis for representing the distribution of extreme random variables.
It is criticised for remaining at an abstract level, lacking solid theoretical basis at a microlevel, not adequately addressing the issues emerging when actors adopt each other's roles and lacking the contextual sensitivity across countries and social settings (Cai and Cui 2015).
The strength of the implicit models are their solid theoretical basis, while simultaneous equation models should be chosen from an empirical viewpoint (Elhorst 2003, p. 741).
The mechanism models are based on solid theoretical basis and have strong expansibility, but it is hard to realize accurate modelling and fast calculation.
