The phrase "are useful examples" is correct and usable in written English.
You can use it when discussing or referring to specific instances that serve as helpful illustrations or references in a particular context.
Example: "The case studies presented in the report are useful examples of successful marketing strategies."
Alternatives: "serve as helpful examples" or "are valuable illustrations".
The introduction of high-toughness, moisture-resistant low-alloy steel and enhanced-performance rutile-coated stainless steel MMA electrodes, iron powder addition, and Ti Bo microalloyed wires for SAW and the use of low-residual wires for GMAW are useful examples of this evolutionary process.
Mexico's Oportunidades, Brazil's Bolsa Familia, and Bolivia's Renta Dignidad are useful examples.
Middleton believes it is just as important that he plans now for if Bristol get promoted, and the clubs that have gone up are useful examples.
The boundendly compact sets that are the sets whose intersection with any closed ball is compact are useful examples of approximatively compact sets.
There are useful examples showing that it is feasible to catalyse the formation of Elders' Clubs or older people's associations which become self-sustaining, promote social participation, and improve health and well-being of elders and their families.
They're useful examples of how much feeling and humor can be packed into this compressed form.
In a broad sense, the elements of the theme page demonstrate best practices in reporting health inequality, and may be useful examples for audiences wishing to disseminate the results of health inequality monitoring in RMNCH or other topics.
Some of the camera's quirks are useful; for example, after the customary 10-second beeping in self-timer mode, the camera takes three photos, one second apart, just the way Uncle Joe probably would when shooting the posed family.
These are useful, for example, in studying communication, electromagnetics, seismology, acoustics, etc., problems frequently encountered in this area [3].
There are a slew of functions and other voice commands that are useful: For example, you can ask it how to say "help me" in Spanish.
They provide examples for the calculation of the heat of vaporization of mixtures, which are useful, since such examples are scarce in the literature.
