The phrase "a practical importance" is correct and usable in written English.
It can be used when discussing the significance or relevance of something in a practical context.
Example: "The study highlights a practical importance in understanding how these methods can be applied in real-world scenarios."
Alternatives: "a practical significance" or "a practical value".
Stochastic differential equations [1 3] have attracted a lot of attention, because the problems are not only academically challenging, but also of a practical importance and have played an important role in many fields such as in option pricing, forecast of the growth of population, etc. (see, e.g., [1]).
They also maintain a practical importance: there remain locations, like remote villages and off-the-grid mountaintops, where travellers, lacking online resources, are still forced to rely on physical books.
Drinking mineral water, carbonated or not, has become so popular that a considerable business of bottling and exporting has grown up on both sides of the Atlantic; it has a practical importance in aiding digestion that is much greater than one would expect from its small mineral content.
The engineering situation considered has a practical importance in the pipeline industry.
Consequently, this study has a practical importance for industrial systems to work out and execute an accident forecasting model that accounts for uncertainties, imprecision and randomness in their systems.
Due to the booming of the winery industry in some seismic countries such as, the U.S, Italy, New Zealand, Chile and Argentina, the seismic protection of wine storage tanks may be of a practical importance.
Consideration of the viscosity of various types of liquids depending on the pressure is not only a theoretical issue, but has a large practical importance.
The second case occurs more rarely but has a great practical importance.
The reason for studying MISO systems is that they have a high practical importance due to widespread use of one-antenna pocket-sized terminals.
The rigorous modelling of pervaporation, especially in professional software environment, plays a high practical importance if hybrid separation processes containing membrane units are to be designed.
As it is unlikely that a patient suffers from severe pain after short exposure time, it is assumed that the high discriminatory power at low exposure times is of a less practical importance than that at long exposure times.
